Baseball Stars Professional is an update to the Neo Geo MVS game Baseball Stars which was originally released on July 01, 1991. It includes a a tournament and versus mode.
Gameplay is simillar to the original MVS game. The game includes 16 teams including the Celestial Planets, Heavenly Bodies, Shadow Demons, Battle Knights, Fabulous Superstars, SNK Crushers and others. There's also the option for 2 fields including the SNK stadium and SNK dome.
The game is followed up by Baseball Stars 2 which was released on the NES and Neo Geo.