Von Hayes and Andy Seminick
On May 23, 1962, Joe Pepitone hit two home runs in the same inning. He did this against the Kansas City Athletics.
Many MLB teams have scored runs with multiple players in the same inning. Many MLB teams have also had multiple home runs by different players occur in the same inning, including teams like the Yankees, Blue Jays, and Red Sox.
Mark Bellhorn of the Chicago Cubs in the fourth inning of a game on August 29, 2002 and Carlos Baerga of the Cleveland Indians in the seventh inning of a game on April 8, 1993 are the only two players that have hit home runs from both sides of the plate in the same inning.
On September 18, 2011, Pablo Sandoval hit two fourth-inning home runs against the Colorado Rockies at Coors Field. He also hit a triple in the game, giving him 11 total bases for the contest.
Fifteen players have hit four home runs in the same game. They are: Bobby Lowe - Boston Nationals 1894 Ed Delahanty - Phillies 1896 Lou Gehrig - Yankees 1932 Chuck Klein - Phillies 1936 (extra inning game) Pat Searey - White Sox 1948 (extra inning game) Gil Hodges - Brooklyn Dodgers 1950 Joe Adcock - Milwaukee Braves 1954 Rocky Calovito - Indians 1959 Willie Mays - San Fransisco Giants 1961 Mike Schmidt - Phillies 1976 (extra inning game) Bob Horner - Atlanta Braves 1986 Mark Whitten - Cardinals 1993 Shawn Greene - LA Dodgers 2002 Mike Cameron - Mariners 2002 Carlos Delgado - Blue Jays 2003 Josh Hamilton-Texas Rangers 2012
If the player keeps hitting 9 home runs in every 63 games he plays at the same rate he will hit 27 home runs that season.
It has happened 18 times in the history of Major League Baseball. The last time was on July 21, 2012, when starting pitchers Matt Cain of the San Francisco Giants and Cole Hamels of the Philadelphia Phillies hit home runs off each other. They both homered in the third inning of the game played at Philadelphia's Citizens Bank Park. Cain hit his sixth career homer -- a solo shot -- in the top of the inning. In the bottom half, Hamels blasted his first-ever major league homer, also with the bases empty. The Giants won the game in 10 innings, 6-5.
Babe Ruth hit 659 home runs while a member of the yankees -----Hank Aaron had 732 home runs while a member of the Braves (Milwaukee, Atlanta).
Willie Mays Aikens of the Kansas City Royals did it in the 1980 World Series. Chase Utley of the Philadelphia Phillies duplicated the feat in the 2009 Series.
July 21, 2012, Cole Hamels pitching for the Philadelphia Phillies and Matt Cain of the San Francisco Giants in a day game at Citizens Bank Park in Philadelphia.
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Charles Herbert "Chuck" Klein of the Philadelphia Phillies.