) * Gold Glove Award winner (1990) * 3� Silver Slugger Award winner (1992, 1996, 1998) * 1987 AL Rookie of the Year * 1999 Lou Gehrig Memorial Award * 1992 Home Run Derby winner * Major League Baseball All-Century Team MLB Records * 10.61 At bats per home run ratio * 49 home runs rookie season

Mark McGwire, nicknamed "Big Mac" (born October 1, 1963) is a former Major League Baseball player who played his major league career with the Oakland Athletics and the St. Louis Cardinals. He replaced Hal McRae as the hitting coach (Coach_(baseball)#Offensive_coaches:_hitting_coach_and_base_coaches) for the St. Louis Cardinals for 2010 (2010 in baseball).

For his career, McGwire averaged a home run once every 10.61 at bats, the lowest at bats per home run ratio in baseball history (Babe Ruth is second at 11.80). In 1987 (1987 in baseball), he broke the single-season home run record for rookies, with 49. In 1998 (1998 in baseball), McGwire and Sammy Sosa achieved national fame for their home run-hitting prowess in pursuit of Roger Maris single season home run record (1998 Major League Baseball home run record chase); McGwire would break the record and hit 70 home runs that year. Barry Bonds now holds the record, after hitting 73 home runs during the 2001 season. In 2010, McGwire publicly admitted having used performance-enhancing drugs throughout his career.