All-Star Baseball 2003 features all-new player models created with 3D CyberScan technology for one of the most realistic representations of player faces ever seen. There are also 10 game modes for greater replay depth. Modes include exhibition, season, career, franchise, expansion, All-Star Game, series, manager, home-run derby, and batting practice. Franchise mode allows users to play as and build their favorite teams for up to 20 consecutive seasons. All-new expansion play lets you choose a city, stadium, and team logo and add that team to the major leagues. And the expansion draft lets you draft from a pool of unprotected players and build a team from free agents and minor leaguers.

The game features a three-man broadcast booth with Bob Brenly, Thom Brennaman, and Steve Lyons providing in-depth commentary. The Cooperstown Hall of Fame team features sluggers from the past such as Mike Schmidt, Reggie Jackson, and Yogi Berra. All 30 major-league teams and more than 900 players are represented, all with official stadiums, logos, and uniforms. All-Star Baseball 2003 has more than 50 stadiums from which to choose, including eight classic stadiums and 10 expansion stadiums.