Mr. Burns makes a million dollar bet with his arch-rival Aristotle Amadopolis that the Springfield Nuclear Power Plant team will beat the Shelbyville Nuclear Power Plant team in the softball championships. To ensure victory, Burns hires a number of ringers, including pro baseball players Darryl Strawberry, Ken Griffey, Jr., Steve Sax, Roger Clemens, Jose Canseco, Don Mattingly, Ozzie Smith, Wade Boggs and Mike Scioscia to replace the plant employees he cut from the team. But as game day approaches, the pros all succumb to various strange ailments and accidents that prevent them from playing and it's up to Homer and his teammates to beat the Shelbyville team. With bases loaded and the score tied in the ninth inning, Homer is sent to bat and wins the game when the pitch hits him in the head and accidentally scores a homer.