Hitting two grand slams in one game has been accomplished by 13 major league hitters, including Hall of Famers Tony Lazzeri and Frank Robinson. The only pitcher to match this achievement is Tony Cloninger of the Braves, who belted two bases loaded homers on July 3, 1966 at Candlestick Park against the San Francisco Giants. Cardinals third baseman Fernando Tatis is the only player to record two grand slams in one inning when he connected for both of those home runs against Chan Ho Park of Los Angeles at Dodger Stadium. Nomar Garciaparra's two-grand slam game was on May 10, 1999 for the Red Sox at Fenway Park, making him the only player to club two grand slams in one game at his home ballpark. Bill Mueller is the only switch hitter credited with two grand slams in one game and he hit one from each side of the plate on July 29, 2003 for the Red Sox.