Yankee designated hitter Alex Rodriguez establishes a major league record with his 24th career grand slam, going deep off George Kontos in the team’s 5-1 victory over the Giants in the Bronx. The two-out seventh-inning bases-loaded round tripper surpasses the mark established in 1938 by fellow Bronx Bomber Lou Gehrig.

Yankee designated hitter Alex Rodriguez establishes a major league record with his 24th career grand slam, going deep off George Kontos in the team’s 5-1 victory over the Giants in the Bronx. The two-out seventh-inning bases-loaded round tripper surpasses the mark established in 1938 by fellow Bronx Bomber Lou Gehrig.