» April 15, 1991: Phillies pitcher Jason Grimsley uncorks four wild pitches in a 5-4 loss to the Cubs.
» April 23, 1991:
Manager Nick Leyva is fired by the Phillies after just 13 games, and replaced by Jim Fregosi. It is the second-fastest firing in major league history. Cal Ripken Sr. was fired by Baltimore after six games in 1988. Under Fregosi, the Phils lose their 10th in 14 games, dropping a 2–1 decision to the Mets. Jason Grimsley is the loser as both Mets score on walks.
» April 28, 1991:
Philadelphia hurler Jason Grimsley sets a major league mark by tossing a wild pitch in his 9th consecutive game (dating back to 1990). The old record of eight was set in 1986 by Jaime Cocanower of the Brewers. In the same contest, the Phillies turn the 1st triple play in the 20-year history of Veterans Stadium as they defeat the Padres, 9-2, with Grimsley notching the win.
» April 2, 1992: The Phillies trade P Jason Grimsley (1-7 in 1991) to the Astros in exchange for P Curt Schilling.
» July 15, 1994:
In the first inning at Comiskey Park, Sox manager Gene Lamont accuses Indian slugger Albert Belle of using a corked bat, and umpire Dave Phillips confiscates the bat and stores it in the ump's dressing room. In a Mission Impossible caper revealed in 1999, the Indians Jason Grimsley crawls 100 feet along a ceiling, drops down into the dressing room, and exchanges Belle's bat for one of Paul Sorrento's. After the 3–2 Indian's win, the switch is discovered to the consternation of the umps and the White Sox. The Indians subsequently turn over one of Belle's bats and Belle is given a 10-day suspension, later reduced to seven games.
» May 28, 1996: At Anaheim, Kenny Rogers loses his no-hitter in the 8th when Garret Anderson hits a lead off single, and loses the game in the 9th when he walks Chili Davis with the bases loaded to score an unearned run. Jason Grimsley is the winner, 1–0, dropping New York into a tie for first place with Baltimore.
» March 21, 1997: The pitching-poor Detroit Tigers release pitcher Jason Grimsley. Grimsley posted a 5-7 record with a 6.84 ERA with the California Angels last season, but was 0–3 this spring.