Joseph Buren Cassel
- Bats Right, Throws Right
- Height 6' 2", Weight 190 lb.
- School Los Angeles Pierce College, Loyola Marymount University
- High School John F. Kennedy High School (Granada Hills)
- Debut August 10, 2007
- Final Game September 27, 2008
- Born August 8, 1980 in Los Angeles, CA USA
Jack Cassel pitched 15 games in the big leagues over parts of two seasons. He is the brother of NFL quarterback Matt Cassel and former minor league pitcher Justin Cassel. Along with contemporary outfielder Chris Dickerson, Cassel cofounded the non-profit environmental group Players for the Planet.