Robert Moses "Lefty" Grove was an American professional baseball pitcher. After having success in the minor leagues during the early 1920s, Grove became a star in Major League Baseball with the American League's Philadelphia Athletics and Boston Red Sox. One of the greatest pitchers in history, Grove led the American League in wins in four separate seasons, in strikeouts seven years in a row, and had the league's lowest earned run average a record nine times. Over the course of the three years from 1929 to 1931, he twice won the pitcher's Triple Crown, leading the league in wins, strikeouts, and ERA, while amassing a 79–15 record and leading the Athletics to three straight AL championships. Overall, Grove won 300 games in his 17-year MLB career. He was elected to the National Baseball Hall of Fame in 1947.

George William Pipgras was an American right-handed starting pitcher and umpire in Major League Baseball.