Exhibit 1








                                  June 30, 2004


VIA EMAIL AND COURIER

SportsLine.com, Inc.
2200 W. Cypress Creek Road
Fort Lauderdale, FL 33309
Tel.: 954-351-2120

Attn:   Michael Levy, Chief Executive Officer
        Kenneth Gersh, Vice President, General Counsel

Gentlemen:

            Reference  is made to the  Agreement  dated  as of  March  5,  1997,
between   SportsLine.com,   Inc.   (formerly  known  as  SportsLine  USA,  Inc.,
"SPORTSLINE")  and CBS Broadcasting  Inc. (as successor to CBS Inc.,  "CBS"), as
amended  through the date hereof (the  "AGREEMENT").  Unless  otherwise  defined
herein, terms are used herein as defined in the Agreement.

            Subparagraphs  10.2(b),  10.2(c)  and 10.2(d) of the  Agreement  are
hereby  amended by deleting  therein each of the  references to July 1, 2004 and
substituting therefor references to August 1, 2004.

            Each  reference in the  Agreement,  any  amendments  thereto and any
other agreement related thereto,  to the Agreement shall mean and be a reference
to the Agreement as amended hereby. Except as expressly and specifically amended
by this Letter,  the provisions of the Agreement  shall remain in full force and
effect.

            Each party hereto  represents  and warrants to the other as follows:
the execution,  delivery and  performance by such party of this Letter,  and the
consummation by such party of the transactions  contemplated  hereby, are within
such party's  corporate  powers and have been duly  authorized  by all necessary
corporate  action on the part of such party;  this Letter has been duly executed
and  delivered  by such party and this  Letter  constitutes  a valid and binding
agreement of such party,  enforceable  against such party in accordance with its
terms.  SportsLine  further  represents and warrants that a special committee of
its Board of Directors  comprised of non-CBS  affiliated  members has determined
that  this  letter  agreement  is  fair  to  and in the  best  interests  of the
stockholders  of  SportsLine,  and has  approved the  transactions  contemplated
hereby.

            This Letter shall be governed by, and construed in accordance  with,
the laws of the State of New  York.  This  Letter  shall be  effective  upon due
execution  and delivery by each party  hereto and may be executed and  delivered
(including by facsimile  transmission) in one or more  counterparts,  and by the



different parties hereto in separate  counterparts,  each of which when executed
shall  be  deemed  to be an  original  but all of  which  taken  together  shall
constitute one and the same agreement.

                                      Very truly yours,

                                      CBS BROADCASTING INC.


                                      By      /s/ Michael D. Fricklas
                                             --------------------------------
                                      Name:  Michael D. Fricklas
                                      Title: Executive Vice President

Acknowledged and Agreed to by:

SPORTSLINE.COM, INC.


By      /s/ Michael Levy
       ------------------------------
Name:  Michael Levy
Title: President and Chief Executive
       Officer


cc:   Richard J. Bressler