Frederick William Clausen
- Bats Right, Throws Left
- Height 5' 11", Weight 190 lb.
- Debut July 23, 1892
- Final Game May 4, 1896
- Born April 26, 1869 in New York, NY USA
- Died February 11, 1960 in Memphis, TN USA
As a rookie in 1892, he did reasonably well for the Louisville Colonels, putting up a 3.06 ERA as a starter on a team that finished well under .500. It was the second-best ERA among the starters. When he struggled in early 1893, he eventually landed with the Chicago Colts, for whom he went 6-2. He also made brief appearances in 1894 and 1896. He had substantial success in the minors. With the 1892 Columbus Reds, he went 17-5. For the 1893 Macon Central City club, he was 16-4. He won 20 games in 1897, split among three teams, of which one was the Lancaster Maroons, for whom he was 16-4. Sporting Life of November 27, 1889 stated that he had pitched for several semipro clubs before being signed by the minor league Milwaukee team.
- 200 Innings Pitched Seasons: 1 (1892)