McGwire was selected by the Athletics with the 10th overall selection in the 1984 MLB draft. He played college baseball at the University of Southern California (where he was a teammate of Randy Johnson and Jack Del Rio) under coach Rod Dedeaux. He was drafted by the Montreal Expos in the 1981 amateur draft but did not sign. He attended Damien High School in La Verne, California, where he played baseball, golf, and basketball. 2.2.1 Single-season home run record chase (1998).2.1.1 Rookie home-run record and major-league leader (1987).In 2010, McGwire publicly admitted to using performance-enhancing drugs during a large portion of his career. McGwire was one of several central figures in baseball's steroids scandal. He finished with 583 home runs, which was fifth all-time when he retired. Injuries significantly cut into his playing time in 20 and factored into his decision to retire. McGwire also led the league in runs batted in, twice in bases on balls and on-base percentage and four times in slugging percentage. McGwire surpassed Maris and finished with 70 home runs, a record that Barry Bonds would break three years later with 73. With the Cardinals in 1998, McGwire joined Cubs slugger Sammy Sosa in a chase for the single-season home-run record set by Roger Maris in 1961. A right-handed batter and thrower, McGwire stood 6 feet 5 inches (1.96 m) tall and weighed 245 pounds (111 kg) during his playing career. Injuries cut short even greater potential, as he reached 140 games played in just eight of 16 total seasons. 394 on-base percentage (OBP) and twice leading the major leagues in bases on balls. He demonstrated exemplary patience as a batter, producing a career. McGwire ranks 11th all-time in home runs with 583, led the major leagues in home runs in five different seasons and set the major-league record for home runs hit in a four-season period from 1996 to 1999 with 245. One of the most prolific home-run hitters in baseball history, McGwire holds the major-league career record for at-bats per home run ratio (10.6), and is the former record holder for both home runs in a single season (70 in 1998) and home runs hit by a rookie (49 in 1987). Louis Cardinals, winning one World Series championship each, with Oakland as a player in 1989 and with St.

His Major League Baseball (MLB) playing career spanned from 1986 to 2001 while playing for the Oakland Athletics and the St. Mark David McGwire (born October 1, 1963), nicknamed Big Mac, is an American former professional baseball first baseman.

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