William Elmer Jacobs
- Bats Right, Throws Right
- Height 6' 0", Weight 165 lb.
- Debut April 23, 1914
- Final Game September 13, 1927
- Born August 10, 1892 in Salem, MO USA
- Died February 10, 1958 in Salem, MO USA
Elmer Jacobs played pro ball for 21 years. He won 220 games in the minors and was a twenty game winner in the Pacific Coast League five times. In 1928, he went 22-8 with the San Francisco Seals and led the PCL with a 2.56 ERA and 159 strikeouts. In 2005 he was elected to the Pacific Coast League Hall of Fame.