Frederick Donald Rudolph (August 16, 1931 – September 12, 1968) was an American Major League Baseball (MLB) left-handed pitcher.

He appeared in 124 games pitched over all or parts of six major league seasons for the Chicago White Sox, Cincinnati Reds, Cleveland Indians and Washington Senators between 1957 and 1964.

Rudolph's professional baseball career extended from 1950 through 1966, except for the 1953 season, which he spent in the United States Army.

Known during his career as the husband and manager of burlesque dancer "Patti Waggin" (born Patricia Brownell),[1] Rudolph was a batting practice pitcher for the American League (AL) All-Star team on July 10, 1962 at District of Columbia Stadium (Robert F. Kennedy Stadium).

After John F. Kennedy threw out the ceremonial first pitch,[3] Rudolph went five innings against the Baltimore Orioles, allowing home runs to left-handed hitters Jim Gentile and Boog Powell and taking the 3–1 loss.