William Robertson Breckinridge
- Bats Right, Throws Right
- Height 5' 11", Weight 175 lb.
- School Dartmouth College
- Debut June 30, 1929
- Final Game September 21, 1929
- Born October 16, 1907 in Tulsa, OK USA
- Died August 23, 1958 in Tulsa, OK USA
Bill Breckinridge served in the Army in Europe inWorld War II(BN). He had pitched in 3 games for the Athletics in 1929 and had been on the team's World Series roster, although he was not used. He was at Dartmouth College a year before Red Rolfe started.