Milwaukee’s Ryan Braun slugged his sixth career grand slam home run last night in the Brewers 9-5 win over Philadelphia. Braun now holds the team record for most career grand slams.
The MLB record for most career grand slams is held by Alex Rodriguez with 25. He is followed on this list by Lou Gehrig (23) and Manny Ramirez (21).
The most grand slams in a season by one player is six, held jointly by Don Mattingly and Travis Hafner. Mattingly hit six grand slams in 1987; Hafner hit his half-dozen in 2006.