who holds the mariners career record for grand slams how many
Lou Gehrig (23).
Lou Gehrig hit 23 Grand Slams during his career, which is a MLB record.
Lou Gehrig holds the Major League Baseball (MLB) record for career Grand Slams with 23; however, as of 2012, two (2) active players, Alex Rodriguez and Manny Ramirez have recorded 22 and 21 career Grand Slams, respectively.
Lou Gehrig, with 23 Grand Slams
Lou Gehrig holds the record for most grand slams in a career at 23, but Alex Rodriguez has a reasonable chance of breaking that. Check the link below for a list of every MLB player who has hit at least two grand slams in a career. This includes Tony Cloninger, a pitcher who hit two grand slams in one game -- and hit only nine other home runs in his entire career.
Alex Rodriguez holds the major-league record for grand slam home runs with 25. On September 20, 2013, he hit No. 24 in a game against the San Francisco Giants at Yankee Stadium. He had been tied with Lou Gehrig with 23 grand slams since June 12, 2012. Next on the list are Manny Ramirez with 21, Eddie Murray with 19 and Willie McCovey and Robin Ventura with 18. McCovey holds the National League record for career grand slams.
Your question makes no sense idiot... rephrase it.
As of the start of the 2008 season, that would be Ernie Banks with 12.
Barry Bonds hit eleven grand slams during his career.
Lou Gehrig with 23 grand slams
16. The record is 23, held by Lou Gehrig.