That would be Mark McGwire, with a .618 average.
That was Mark McGwire, with 49.
In 1968, Carl Yastrzemski led the American League with a .301 average.
Bobby Grich was the first Angels player to lead the American League in home runs when he hit 22 in the 1981 season and tied with Tony Armas, Dwight Evans, and Eddie Murray for the league lead. The only other Angels player to win a league home run crown was Reggie Jackson who tied with Gorman Thomas for the league lead in 1982 with 39.
Up through the 2011 All-Star break, 114 ... 52 in the National League and 62 in the American League. Teams: The Philadelphia Phillies lead the National League with 11 and the Seattle Mariners lead the American League with 9. Pitchers: James Shields of the Tampa Bay Rays leads the American League with 7 and Roy Halladay of the Philadelphia Phillies leads the National League with 6.
The first switch hitter to lead MLB in RBIs was New York Giants shortstop George Davis, who had 136 RBIs in 1897. Of course, there wasn't an American League at that time. The only switch hitter, after 1901 and the birth of the American League, to lead MLB in RBIs was Mickey Mantle who had 130 in 1956.
Miguel Cabrera with 37 in 2008.
George Brett had 20 triples that year to lead the AL.
Vladimir Guerrero Vladimir Guerrero's honors include two American League Silver Slugger awards and the American League Most Valuable Player in 2004.
He has never led so far in his career.
Dom DiMaggio of the 1950 Boston Red Sox led the American League in stolen bases with 15.
1) Jim Rice of the Boston Red Sox led the American League with 46 home runs and 15 triples in 1978. 2) Mickey Mantle of the New York Yankees led the American League with 37 home runs and tied for the lead in triples with 11 in 1955. 3) Willie Mays of the New York Giants led the National League with 51 home runs and tied for the lead in triples with 15 in 1955.
Babe Ruth lead the American League with 46 home runs in 1929.