Jimmie Foxx, 50 in 1939, was the most I could find
mickey mantle
right handed hitters
Right now Barry Bonds.
It has happened twice. On April 8, 1993, switchhitter Carlos Baerga of the Cleveland Indians hit a home run in the seventh inning off left hander Steve Howe. Later in the inning, he hit a homer off right hander Steve Farr. It happened again on August 29, 2002, when switch hitter Mark Bellhorn of the Chicago Cubs duplicated the feat in a game against the Milwaukee Brewers.
Barry Bonds has the most career home runs with 762.
Hank Aaron, Felipe Alou, Ernie Banks, and Frank Robinson each hit 7 home runs off of Koufax, the most of any right handed batter.
Babe Ruth with 714 home runs
He holds the major league records for most home runs in a career (762) and most home runs in a season (73).
Babe Ruth is third on the all time home run list with 714 home runs.
Hank Aaron had the most home runs for a regular season.
Josh Hamilton with the Texas Rangers with 35 home runs in 2008
Barry Bonds has the most home runs in Major League Baseball (762).