Records

• Holds Major League record for home runs in a season. (70) - 1998
• Holds Major League record for home runs by a rookie in a season. (49) - 1987
• Holds Major League record for home runs in a season by a righthander. (70) - 1998
• Holds Major League record for home runs in a season by a first baseman. (69) - 1998
• Holds Major League record for home runs hit on the road by a righthander. (32) - 1998
• Holds Major League record for consecutive years with 50 or more home runs. (4)
• Holds Major League record for home runs in two consecutive seasons. (135) - 1998, 1999
• Holds Major League record for home runs in three consecutive seasons. (193) - 1997, 1998, 1999
• Holds Major League record for home runs in four consecutive seasons. (245) - 1996, 1997, 1998, 1999
• Holds Major League record for home runs in five consecutive seasons. (284) - 1995, 1996, 1997, 1998, 1999
• Holds Major League record for home runs through May 31. (27) - 1998
• Holds Major League record for home runs through June 30. (37) - 1998
• Holds Major League record for home runs through July 31. (45) - 1988
• Holds Major League record for home runs through September 30. (70) - 1998
• Holds Major League record for most extra bases on long hits by a rookie in a season. (183) - 1987
• Holds Major League record for most extra bases on long hits by a righthander in a season. (231) - 1998
• Holds Major League record for most base on balls by a righthander in a season. (162) - 1998

• Holds Major League record for at bats per home run in a single season. (7.27) - 1998
• Holds Major League record for career at bats per home run. (11.23)
• Holds Major League record for home runs per 162 games played in a season. (73.17) - 1998
• Holds Major League record for home runs per 162 games played in a career. (48.23)
• Holds Major League record for highest RBI-Per-Hit Ratio in 200+ at bats. (1.03) - 1995
• Holds Major League record for home runs in consecutive series'. (20) - 1996
• Holds Major League record for hitting a home run in 17 different Major League ballparks. - 1987
• Holds Major League record for fewest at-bats to 50 home runs. (390) - 1996, 1998
• Holds Major League record for fewest at-bats to 400 home runs. (4,726 at-bats) - 1986 - 1998
• Holds Major League record for fewest at-bats to 500 home runs. (5,487 at-bats) - 1986 - 1999
• Holds Major League record for fastest to 40 home runs. (90th game, 281st at-bat) - 1998
• Holds Major League record for fastest to 50 home runs. (125 games) - 1998

• Shares Major League record for most home runs hit on the road in a season. (32) - 1998
• Shares Major League record for most home runs in the month of May. (16) - 1998
• Shares Major League record for most home runs through August 31. (55) - 1998
• Shares Major League record for most home runs in one inning. (2) On 22 Sep 96 5th inning
• Shares Major League record for most times hitting three or more home runs in a game in a season. (2) 14 April, 19 May 1998
• Shares Major League record for most home runs in two straight games. (5) - 27 June (3) and 28 June (2) - 1987, 10 June (2) and 11 June (3) - 1995
• Shares Major League record for longest home run streak to start the season. (4 in 4 games)
• Shares Major League record for most game winning RBI's by a rookie in a season. (14) - 1987
• Shares Major League record for fastest to 20 home runs. (41st game) - 1998
• Shares Major League record for most runs scored in two consecutive games. (9) On 27,28 Jun 87

• Holds American League record for highest slugging percentage by a rookie in a season. (.618) - 1987
• Shares American League record for most home runs hit on road by righthander in a season. (28) - 1996

• Holds National League record for most home runs hit at home in a season. (38) - 1998
• Holds National League record for home runs hit at home by a righthander in a season. (38) - 1998
• Holds National League record for most extra bases on long hits. (231) - 1998
• Holds National League record for most base on balls in a season. (162) - 1998
• Shares National League record for most home runs through April 30. (11) - 1998

• Holds Oakland Athletics team record for career home runs. (363)
• Holds Oakland Athletics team record for career grand slams. (9)
• Holds Oakland Athletics team record for career RBI. (941)
• Holds Oakland Athletics team record for career extra base hits. (563)
• Holds Oakland Athletics team record for career extra bases on long hits. (1294)
• Holds Oakland Athletics team record for career slugging percentage. (.551)
• Holds Oakland Athletics team record for home runs by a rookie. (49) - 1987
• Holds Oakland Athletics team record for home runs in a season. (52) - 1996
• Holds Oakland Athletics team record for home runs on the road in a season. (28) - 1987, 1996
• Holds Oakland Athletics team record for home runs in a single month. (15) - May 1987
• Holds Oakland Athletics team record for consecutive games reaching base. (62) 16 Sep 95 - 18 Jun 96
• Holds Oakland Athletics team record for slugging percentage in a season. (.730) - 1996
• Holds Oakland Athletics team record for on base percentage in a season. (.467) - 1996
• Holds Oakland Athletics team record for most game winning RBI's. (20) - 1988

• Holds St. Louis Cardinals team record for home runs in a season. (70) - 1998
• Holds St. Louis Cardinals team record for home runs in a single month. (16) - May 1998
• Holds St. Louis Cardinals team record for home runs in the month of September. (15) - 1997
• Holds St. Louis Cardinals team record for home runs at home in a season. (38) - 1998
• Holds St. Louis Cardinals team record for home runs on the road in a season. (32) - 1998
• Holds St. Louis Cardinals team record for home runs in consecutive seasons. (135) - 1998, 1999
• Holds St. Louis Cardinals team record for most extra bases on long hits. (231) - 1998
• Holds St. Louis Cardinals team record for most base on balls. (162) - 1998

Notables

• On 25 Aug 86 he hit his 1st career home run @ Detroit off of Walt Terrel.
• On 05 Jul 89 he hit his 100th career home run off of the Kansas City Royals' Charlie Liebrandt
• On 10 Jun 92 he hit his 200th career home run @ Milwaukee off of Chris Bosio.
• On 25 Jun 96 he hit his 300th career home run off of the Detroit Tigers' Omar Olivares.
• On 08 Aug 97 he hit his 365th career and 1st National League home run off of Phildelphia's Mark Lieter.
• On 8 May 98 he hit his 400th career home run @ N.Y. off of the Mets' Rick Reed.
• On 05 Aug 99 he hit his 500th career home run off of the San Diego Padre's Andy Ashby
• Became the first player in Major League history to hit 30 or more home runs in his first four seasons
• In 1996 he became the 14th player to break the 50 home run barrier, and did so in fewer at bats than anyone in Major League history. He is the only player ever to hit 50 or more home runs in less than 140 games.
• On 20 Aug 98 McGwire became the first player in history to hit 50 home runs in three consecutive seasons.
• On 20 Aug 98 McGwire became the oldest player to hit 50 home runs. 34 years, 324 days.
• On 19 Sep 97 McGwire hit his 54th homer and became the first major leaguer to hit 20 or more homers for two teams in the same season. In 1998 he led the A's (34) and was second on the Cardinals (24) in home runs
• He has been voted onto the American League All-Star team nine times and the National League All-Star three times. He was selected but did not play due to injury in the 1991 or 1995 All-Star Games.
• McGwire was the National League's leading vote getter for the1998 All-Star Game with 3,377,145 votes.
• He was a member of the 1989 World Series Champion Oakland Athletics.
• He was a member of the 1984 Silver Medal U.S. Olympic Baseball Team.