SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                 SCHEDULE 13G/A*
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                              PURSUANT TO 13d-2(b)

                                (Amendment No. 1)

                           THE SPORTS AUTHORITY, INC.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    84917U109
                                 (CUSIP Number)

                                December 31, 2004
             (Date of event which requires filing of this statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule 13G is filed: 
     [ ] Rule 13d-1(b) 
     [X] Rule 13d-1(c) 
     [ ] Rule 13d-1(d)





                              (Page 1 of 11 Pages)
----------------
     *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).




CUSIP No. 84917U109                   13G                     Page 2 of 11

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS 
            I.R.S. IDENTIFICATION NO. 
            OF ABOVE PERSONS (ENTITIES ONLY)
                                           Adage Capital Partners, L.P.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [ ]
                                                                  (b)  [X]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION 
                             Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                 -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                 1,437,000
OWNED BY       ___________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                 -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                 1,437,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED 
            BY EACH REPORTING PERSON
                                                 1,437,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED 
            BY AMOUNT IN ROW (9)
                                                 5.6%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON ** 
                                                 PN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP No. 84917U109                   13G                     Page 3 of 11

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS 
            I.R.S. IDENTIFICATION NO. 
            OF ABOVE PERSONS (ENTITIES ONLY)
                                           Adage Capital Partners GP, L.L.C.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [ ]
                                                                  (b)  [X]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION 
                             Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                 -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                 1,437,000
OWNED BY       ___________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                 -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                 1,437,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED 
            BY EACH REPORTING PERSON
                                                 1,437,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED 
            BY AMOUNT IN ROW (9)
                                                 5.6%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON ** 
                                                 OO
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP No. 84917U109                   13G                     Page 4 of 11

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS 
            I.R.S. IDENTIFICATION NO. 
            OF ABOVE PERSONS (ENTITIES ONLY)
                                           Adage Capital Advisors, L.L.C.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [ ]
                                                                  (b)  [X]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION 
                             Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                 -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                 1,437,000
OWNED BY       ___________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                 -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                 1,437,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED 
            BY EACH REPORTING PERSON
                                                 1,437,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED 
            BY AMOUNT IN ROW (9)
                                                 5.6%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON ** 
                                                 OO
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP No. 84917U109                   13G                     Page 5 of 11

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS 
            I.R.S. IDENTIFICATION NO. 
            OF ABOVE PERSONS (ENTITIES ONLY)
                                                 Robert Atchinson
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [ ]
                                                                  (b)  [X]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION 
                             United States
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                 -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                 1,437,000
OWNED BY       ___________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                 -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                 1,437,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED 
            BY EACH REPORTING PERSON
                                                 1,437,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED 
            BY AMOUNT IN ROW (9)
                                                 5.6%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON ** 
                                                 IN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP No. 84917U109                   13G                     Page 6 of 11

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS 
            I.R.S. IDENTIFICATION NO. 
            OF ABOVE PERSONS (ENTITIES ONLY)
                                                 Phillip Gross
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [ ]
                                                                  (b)  [X]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION 
                             United States
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                 -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                 1,437,000
OWNED BY       ___________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                 -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                 1,437,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED 
            BY EACH REPORTING PERSON
                                                 1,437,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED 
            BY AMOUNT IN ROW (9)
                                                 5.6%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON ** 
                                                 IN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP No. 84917U109                   13G                     Page 7 of 11

Item 1(a).     Name of Issuer:

     The name of the issuer is THE SPORTS AUTHORITY, INC. (the "Company").

Item 1(b).     Address of Issuer's Principal Executive Offices:

     The Company's principal executive offices are located at 1050 West Hampden
Avenue, Englewood Colorado 80110

Item 2(a).     Name of Person Filing:

     This statement is filed by:
          (i) Adage Capital Partners, L.P., a Delaware limited partnership
              ("ACP") with respect to the shares of Common Stock directly owned
              by it;
         (ii) Adage Capital Partners GP, L.L.C., a limited liability company
              organized under the laws of the State of Delaware ("ACPGP"), as
              general partner of ACP with respect to the shares of Common Stock
              directly owned by ACP;
        (iii) Adage Capital Advisors, L.L.C., a limited liability company
              organized under the laws of the State of Delaware ("ACA"), as
              managing member of ACPGP, general partner of ACP, with respect to
              the shares of Common Stock directly owned by ACP;
         (iv) Phillip Gross ("Mr. Gross"), as managing member of ACA, managing
              member of ACPGP, general partner of ACP with respect to the shares
              of Common Stock directly owned by ACP; and
         (v) Robert Atchinson ("Mr. Atchinson"), as managing member of ACA,
             managing member of ACPGP, general partner of ACP with respect to
             the shares of Common Stock directly owned by ACP.

             The foregoing persons are hereinafter collectively 
         referred to as the "Reporting Persons." Any disclosures herein 
         with respect to persons other than the Reporting Persons are 
         made on information and belief after making inquiry to the 
         appropriate party.

Item 2(b).     Address of Principal Business Office or, if None, Residence:

     The address of the business office of each of the Reporting Persons is 200
Clarendon Street, 52nd floor, Boston, Massachusetts 02116.

Item 2(c).     Citizenship:

     ACP is a limited partnership organized under the laws of the State of
Delaware. ACPGP and ACA are limited liability companies organized under the laws
of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United
States.

Item 2(d).     Title of Class of Securities:

     Common Stock (the "Common Stock")




CUSIP No. 84917U109                   13G                     Page 8 of 11

Item 2(e).  CUSIP Number:

     84917U109

Item 3. If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
(c), check whether the person filing is a:

          (a) [ ] Broker or dealer registered under Section 15 of the Act,

          (b) [ ] Bank as defined in Section 3(a)(6) of the Act,

          (c) [ ] Insurance Company as defined in Section 3(a)(19) of the Act,

          (d) [ ] Investment Company registered under Section 8 of the
                  Investment Company Act of 1940,

          (e) [ ] Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E),

          (f) [ ]  Employee Benefit Plan or Endowment Fund in accordance with 
                   13d-1 (b)(1)(ii)(F),

          (g) [ ] Parent Holding Company or control person in accordance with 
                  Rule 13d-1 (b)(1)(ii)(G),

          (h) [ ] Savings Association as defined in Section 3(b) of the
                  Federal Deposit Insurance Act,

          (i) [ ] Church Plan that is excluded from the definition of an
                  investment company under Section 3(c)(14) of the Investment
                  Company Act of 1940,

          (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

     If this statement is filed pursuant to 13d-1(c), check this box:  [x]

Item 4.   Ownership.

     A. Adage Capital Partners, L.P., Adage Capital Partners GP, L.L.C. and
Adage Capital Advisors, L.L.C. 
               (a) Amount beneficially owned: 1,437,000 
               (b) Percent of class: 5.6% The percentages used herein and in the
                   rest of Item 4 are calculated based upon the 25,845,023 
                   shares of Common Stock issued and outstanding as of November 
                   23, 2004 as reflected in the Company's Form 10-Q filed June 
                   10, 2004 for the quarterly period ended October 30, 2004.

               (c)(i) Sole power to vote or direct the vote: -0- 
                 (ii) Shared power to vote or direct the vote: 1,437,000
                (iii) Sole power to dispose or direct the disposition: -0-
                 (iv) Shared power to dispose or direct the disposition:
                      1,437,000.




CUSIP No. 84917U109                   13G                     Page 9 of 11

         ACP has the power to dispose of and the power to vote the shares of
Common Stock beneficially owned by it, which power may be exercised by its
general partner, ACPGP. ACA, as managing member of ACPGP, directs ACPGP's
operations. Neither ACPGP nor ACA directly own any shares of Common Stock. By
reason of the provisions of Rule 13d-3 of the Securities Exchange Act of 1934
(the "Act"), ACPGP and ACA may be deemed to own beneficially the shares owned by
ACP.

     B. Robert Atchinson and Phillip Gross 
               (a) Amount beneficially owned: 1,437,000 
               (b) Percent of class: 5.6% 
               (c)(i) Sole power to vote or direct the vote: -0- 
                 (ii) Shared power to vote or direct the vote: 1,437,000 
                (iii) Sole power to dispose or direct the disposition: -0- 
                 (iv) Shared power to dispose or direct the disposition: 
                      1,437,000. 
     Messrs. Atchinson and Gross, as managing members of ACA, have shared power
to vote the Common Stock beneficially owned by ACP. Neither Mr. Atchinson nor
Mr. Gross directly own any shares of Common Stock. By reason of the provisions
of Rule 13d-3 of the Act, each may be deemed to beneficially own the shares
beneficially owned by ACP.

Item 5.     Ownership of Five Percent or Less of a Class.

     Not applicable.


Item 6.     Ownership of More than Five Percent on Behalf of Another Person.

     ACPGP, the general partner of ACP, has the power to direct the affairs of
ACP, including decisions respecting the disposition of the proceeds from the
sale of the shares. Messrs. Atchinson and Gross are the Managing Members of ACA,
the managing member of ACPGP, and in that capacity direct ACPGP's operations.

Item 7.     Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on by the Parent Holding Company.

     Not applicable.


Item 8.  Identification and Classification of Members of the Group.

     Not applicable.


Item 9.  Notice of Dissolution of Group.

     Not applicable.


Item 10.  Certification.

     Each of the Reporting Persons hereby makes the following certification:

          By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held for




CUSIP No. 84917U109                   13G                     Page 10 of 11

the purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.



                                   SIGNATURES

After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.


DATED:  February 14, 2005

                                    --------------------------
                                    ROBERT ATCHINSON, individually



                                    --------------------------
                                    ROBERT ATCHINSON, as managing member of
                                    Adage Capital Advisors, L.L.C., on behalf of
                                    Adage Capital Partners GP. L.L.C., the
                                    general partner of Adage Capital Partners, 
                                    L.P.



                                    --------------------------
                                    PHILLIP GROSS, individually