The original game consisted of 30 neighborhood kids from which the player must build a team.

As the game progresses, there are some professionals that become available or "unlockable" including Randy Johnson, Derek Jeter, and Mike Piazza.

Eventual Hall of Fame players featured include Barry Larkin, Vladimir Guerrero, Jeff Bagwell, Larry Walker, Chipper Jones, Derek Jeter, Mike Piazza, Tony Gwynn, Ken Griffey Jr., Cal Ripken Jr., Ivan Rodriguez, and Randy Johnson, who are all playable characters to choose from.

Other professional players from the later games included Chipper Jones, Frank Thomas, Alex Rodriguez, Alfonso Soriano, Ichiro Suzuki, Sammy Sosa, Jim Thome, Albert Pujols, Nomar Garciaparra, Ken Griffey Jr., and Barry Bonds.

Several of these players would be featured in multiple releases including Nomar Garciaparra, Derek Jeter, and Alex Rodriguez.