The Toronto Blue Jays hit the most home runs in a game in baseball history on September 14, 1987, with 10. The previous record was nine, which the Blue Jays also held for one day in 1988. The ten homers were hit by Joe Carter, Tony Fernández, John Olerud, Roberto Alomar, Larry Bowa, Dave Stewart, Mike Caldwell, Paul Molitor, and Kevin McReynolds. Carter's homer was the winning shot for the Blue Jays in their 12-11 win over Cleveland. The victory sent them to the World Series for the first time ever. They lost that series four games to three to the Boston Red Sox. But they still hold the record for most home runs in an MLB game. A year later on September 14, 1988, the Blue Jays hit another ten homers in a game against San Diego. This time they lost the game 11-10 in 15 innings. The ten homers were again hit by Carter, Fernández, Olerud, Alomar, Bowa, Stewart, Caldwell, Molitor, and Reynolds. This time around they were defeated by San Diego who went on to win the World Series.