George Edward "Duffy" Lewis (April 18, 1888 – June 17, 1979) was an American professional baseball left fielder who played in Major League Baseball (MLB) for the Boston Red Sox, the New York Yankees, and the Washington Senators from 1910 to 1921.

He made his MLB debut with the Red Sox in 1910, where he formed the Golden Outfield with Tris Speaker and Harry Hooper.

[1] He also played winter baseball in Yuma, Arizona,[3] where he was first noticed by Boston Red Sox owner John I.

[1] The Red Sox won the American League championship, and defeated the New York Giants in the 1912 World Series in eight games.

[1] He drove in the game-winning runs in both Games 3 and 4, and made several catches that helped Boston win the series.

[17][18] After the World Series, Lewis returned to the San Francisco Bay Area, where he performed vaudeville shows at the Pantanges Theatre in Oakland for $500 a week ($15,059 in current dollar terms).

[21] In the 1916 World Series, the Red Sox defeated the Brooklyn Robins in five games; Lewis batted .353 (6-for-17).

[24] Lewis did not play for the Red Sox during the 1918 season due to his service in the United States Navy during World War I.

[27] On December 18, 1918, the Red Sox traded Lewis, along with Dutch Leonard and Ernie Shore, to the New York Yankees for Ray Caldwell, Frank Gilhooley, Slim Love, Roxy Walters and $15,000 ($303,850 in current dollar terms).

[1][30] On December 31, 1920, the Yankees traded Lewis and George Mogridge to the Washington Senators for Braggo Roth.

[1] After he was released from the Washington Senators, Lewis signed with the Salt Lake City Bees of the PCL for the remainder of the 1921 season.

[1] While he was with Salt Lake City, the Red Sox hired him to serve as a scout based in the Western United States.

[45] Lewis also led all American League left fielders in double plays turned in 1910 (eight), and in putouts in 1910 (264)[42] and 1912 (300).

[48] In 1912, the Red Sox moved into Fenway Park, which featured a 10-foot (3.0 m) high mound that formed an incline in front of the 25-foot (7.6 m) left field wall, now better known as the Green Monster.

[1] Sports cartoons of the period often depicted him as a mountain climber making catches amid sheep and snowcaps.

[1][53] Lewis married Eleanor Ruth Keane of Boston, a fan that he met at the Huntington Avenue Grounds, after the 1911 season.

[56] After his baseball career, Lewis and his wife retired to Salem, New Hampshire, where he had VIP box seats at Rockingham Park.