Bill Mueller becomes the first switch-hitter, batting both left and right-handed, to blast two grand slams in the same game. Not known for his power, the Red Sox third baseman, batting eighth in the Boston lineup, also goes deep in the third inning, collecting 9 RBIs in the team’s 14-7 victory the Rangers at The Ballpark in Arlington.

This Day In Baseball

On July 29, 2003 — Bill Mueller becomes the first switch-hitter, batting both left and right-handed, to blast two grand slams in the same game. Not known for his power, the Red Sox third baseman, batting eighth in the Boston lineup, also goes deep in the third inning, collecting 9 RBIs in the team’s 14-7 victory the Rangers at The Ballpark in Arlington.

Source:
Baseball Reference July 29
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game