Question: The player who hit the most home runs in a single season played how many seasons of Major League Baseball ?

Context articles: Frank Thomas (designated hitter)
Bobby Bonds
Albert Belle
Pablo Sandoval
Mark Teixeira
1921 Major League Baseball season
Gus Williams (outfielder)
Hank Aaron
50 home run club
Barry Bonds

Frank Edward Thomas Jr. (born May 27, 1968), nicknamed "The Big Hurt," is an American former first baseman in Major League Baseball who played for three American League (AL) teams from 1990 to 2008, all but the last three years with the Chicago White Sox.
 One of the most fearsome and devastating hitters of his era, he is the only player in major league history to have seven consecutive seasons (1991–1997) with a .300 batting average and at least 100 runs batted in (RBI), 100 runs scored, 100 walks and 20 home runs; over that period, he batted .330 and averaged 36 home runs and 118 RBI per year.
 A perennial MVP candidate through the 1990s, he was named the AL's Most Valuable Player by unanimous vote in 1993 after becoming the first White Sox player to hit 40 home runs, leading the team to a division title; he repeated as MVP in the strike-shortened 1994 season after batting .353 and leading the league in slugging average and runs.
 After two subpar seasons, he lost the MVP in a close vote in 2000 after posting career highs of 43 home runs and 143 RBI, also earning AL Comeback Player of the Year honors, as Chicago finished with the AL's best record.
Bobby Lee Bonds (March 15, 1946 – August 23, 2003) was an American right fielder in Major League Baseball from to , primarily with the San Francisco Giants.
 Noted for his outstanding combination of power hitting and speed, he was the first player to have more than two seasons of 30 home runs and 30 stolen bases, doing so a record five times (the record was matched only by his son Barry), and was the first to accomplish the feat in both major leagues; he became the second player to hit 300 career home runs and steal 300 bases, joining Willie Mays.
 Together with Barry, he is part of baseball's most accomplished father-son combination, holding the record for combined home runs, RBIs, and stolen bases.
 A prolific leadoff hitter, he also set major league records for most times leading off a game with a home run in a career (35) and a season (11, in ); both records have since been broken.
Albert Jojuan Belle (born August 25, 1966) is a former American Major League Baseball outfielder for the Cleveland Indians, Chicago White Sox, and Baltimore Orioles.
 Standing at 6 ft and weighing 225 lb , Belle was one of the leading sluggers of his time, and in 1995 became the first and still only player to ever hit 50 doubles and 50 home runs in a single season.
 He was also the first player to break the 10-million-dollar per year compensation contract in Major League Baseball.
Pablo Emilio Juan Pedro Sandoval Jr. (born August 11, 1986) is a Venezuelan professional baseball third baseman for the San Francisco Giants of Major League Baseball (MLB).
 He has played in Major League Baseball for the Giants and the Boston Red Sox.
 He stands 5 ft tall and weighs 255 lb .
 He previously played portions of three seasons for the Boston Red Sox and seven seasons for the San Francisco Giants.
 Nicknamed "Kung Fu Panda", Sandoval is a two-time All-Star and has won three World Series championships with the Giants.
 Sandoval hit three home runs in Game 1 of the 2012 World Series, becoming the fourth person to hit three home runs in a World Series game, and was named the World Series Most Valuable Player (MVP).
 During the offseason, he plays for the Navegantes del Magallanes of the Venezuelan Professional Baseball League.
Mark Charles Teixeira ( ; born April 11, 1980) is an American former professional baseball first baseman.
 He played 14 seasons in Major League Baseball (MLB) for the Texas Rangers, Atlanta Braves, Los Angeles Angels of Anaheim and New York Yankees.
 Before his professional career, he played college baseball at Georgia Tech, where in 2001 he won the Dick Howser Trophy as the national collegiate baseball player of the year.
 One of the most prolific switch hitters in MLB history, Teixeira was an integral part of the Yankees' 27th World Series championship in 2009, leading the American League (AL) in home runs and runs batted in (RBI) while finishing second in the Most Valuable Player Award (MVP) balloting.
 Teixeira was a three-time All-Star, won five Gold Glove Awards and three Silver Slugger Awards, and also holds the all-time major league record for most games with a home run from both sides of the plate, with 14.
 He was the fifth switch hitter in MLB history to reach 400 home runs.
The 1921 Major League Baseball season, ended when the New York Giants beat the New York Yankees in Game 8 of the World Series.
 1921 was the first of three straight seasons in which the Yankees would lead the majors in wins.
 Babe Ruth broke the single season home run record for the third consecutive season by hitting 59 home runs in 152 games.
 Ruth also broke Roger Connor's record for the most home runs all time when he hit his 139th home run on July 18 against Bert Cole.
 The record for career strikeouts, previously held by Cy Young was also broken in 1921 by Walter Johnson; Johnson lead the league in strikeouts with 143 and ended the season with 2,835 strikeouts.
 Young struck out 2,803 during his career.
 The Cincinnati Reds set a Major League record for the fewest strikeouts in a season, with only 308.
 Future hall of famers Kiki Cuyler and Goose Goslin both debuted in September 1921.
August Joseph "Gus" Williams, Jr. (May 7, 1888 – April 16, 1964), known also as "Gloomy" Gus Williams, was a German American professional baseball player whose career spanned 10 seasons, five of which were spent in Major League Baseball (MLB) with the St. Louis Browns (1911–15).
 Over his major league career, Williams batted .263 with 171 runs scored, 367 hits, 58 doubles, 31 triples, 12 home runs, 147 runs batted in (RBIs), and 95 stolen bases in 410 games played.
 Williams career started out in 1909 with the Monmouth Browns of the Class-D Illinois–Missouri League.
 After playing in the minor leagues for two seasons, Williams made his major league debut in 1911.
 He had another stint in the majors in 1912.
 In 1913, Williams served as the Browns regular outfielder.
 He was a dead-ball era power hitter for the Browns, ranking in the top-10 amongst American League hitters in home runs during the 1913 and 1914 seasons.
 He led the league in strikeouts in 1914.
 Williams would make his last appearance in the major leagues during the 1915 season.
 He would go on to play in the minors with the Toronto Maple Leafs (1915), Nashville Volunteers (1916), Louisville Colonels (1917), and Indianapolis Indians (1918).
 In the minors, he compiled a career batting average of .293 with 838 hits in 759 games played.
 Williams also played semi-professional baseball after leaving the professional circuit.
 He batted and threw left-handed.
 During his baseball career, Williams stood at 6 ft and weighed 185 lb .
Henry Louis "Hank" Aaron (born February 5, 1934), nicknamed "Hammer" or "Hammerin' Hank", is a retired American Major League Baseball (MLB) right fielder who is currently the senior vice president of the Atlanta Braves.
 He played 21 seasons for the Milwaukee/Atlanta Braves in the National League (NL) and two seasons for the Milwaukee Brewers in the American League (AL), from 1954 through 1976.
 Aaron held the MLB record for career home runs for 33 years, and he still holds several MLB offensive records.
 He hit 24 or more home runs every year from 1955 through 1973, and is one of only two players to hit 30 or more home runs in a season at least fifteen times.
 In 1999, "The Sporting News" ranked Aaron fifth on its "100 Greatest Baseball Players" list.
In Major League Baseball (MLB), the 50 home run club is the group of batters who have hit 50 or more home runs in a single season.
 Babe Ruth was the first to achieve this, doing so in 1920.
 By reaching the milestone, he also became the first player to hit 30 and then 40 home runs in a single-season, breaking his own record of 29 from the 1919 season.
 Ruth subsequently became the first player to reach the 50 home run club on four occasions, repeating the achievement in 1921, 1927 and 1928.
 He remained the only player to accomplish this until Mark McGwire and Sammy Sosa matched his feat in 1999 and 2001, respectively, thus becoming the only players to achieve four consecutive 50 home run seasons.
 Barry Bonds hit the most home runs to join the club, collecting 73 in 2001.
 The most recent player to reach the milestone is Aaron Judge, achieving the feat during the 2017 season.
Barry Lamar Bonds (born July 24, 1964) is an American former professional baseball left fielder who played 22 seasons in Major League Baseball (MLB) with the Pittsburgh Pirates and San Francisco Giants.
 Bonds received seven NL MVP awards and 14 All-Star selections, and is considered to be one of the greatest baseball players of all time.