EXHIBIT 10.21 SPONSORSHIP AGREEMENT THIS AGREEMENT, dated for reference purposes as of July 12, 1999 (the "Agreement"), is by and between FOOTBALL NORTHWEST LLC, a Washington limited liability company ("FNW") and MERCATA, Inc., a Delaware corporation ("Sponsor"). R E C I T A L S --------------- A. Pursuant to that certain Consent to Assignment and Amendment of Use Agreement dated January 7, 1997, as amended, between King County, Washington ("King County") and FNW, FNW is granted the exclusive right to and revenue from all advertising both inside and outside the King County Domed Stadium (the "Kingdome") and the Kingdome Pavilion, including on adjacent parking lots. B. The Kingdome is located in Seattle, Washington and currently serves as the home venue for the National Football League ("NFL") franchise for the Seattle Seahawks. C. FNW owns and, during the term of this Agreement, FNW or its successor or assign will retain the exclusive signage and advertising rights for the Kingdome. D. Sponsor desires to acquire from FNW certain sponsorship rights in the areas described below and FNW is vested with the authority to grant and desires to grant such rights to Sponsor in accordance with the terms and provisions of this Agreement. NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, receipt of which is hereby acknowledged, the parties hereby agree as follows: 1. Sponsorship Benefits. Sponsor shall during the term of this Agreement -------------------- receive the following sponsorship benefits: A. Television 1. Three (3) :30 second Sponsor produced commercials ("Concept Ads") to air within each of three (3) preseason telecasts. 2. Three (3) :30 second Seahawks produced commercials ("Products Ads") to air within each of three (3) preseason telecasts. Content shall be reviewed and approved by Sponsor. Shawn Springs will be featured in the commercial. 3.