Robert Clayton Shantz (born September 26, 1925) is an American former professional baseball player.
He played as a left-handed pitcher in Major League Baseball (MLB) from 1949 through 1964, most notably as a member of the Philadelphia Athletics with whom he won the 1952 American League Most Valuable Player Award.
A three-time All-Star, Shantz won eight consecutive Gold Glove Awards and won a World Series championship with the 1957 New York Yankees.
He also played for the Pittsburgh Pirates, Houston Colt .45s, St.
Louis Cardinals, Chicago Cubs, and the Philadelphia Phillies.
Shantz began his career as a starting pitcher, but about halfway through he converted to a competent relief pitcher.
In 1951, he added the knuckleball to his repertoire.
Standing only 5 ft 6 in (1.68 m), Shantz had a career record of 119 games won, 99 games lost, and an earned run average (ERA) of 3.38.