Casey Fossum is currently retired from playing Big League baseball and resides in his hometown, Waco, Texas.

Fossum was selected by the Boston Red Sox in the 1999 June draft as the 18th pick in the first supplemental round (48th overall), and started his major league career in 2001.

During three years with Boston, Fossum moved between the bullpen and the rotation, compiling 14 victories with two saves in 75 games.

(Coincidentally, both of Fossum's major league saves preserved wins for John Burkett (May 29, 2002 and July 21, 2003)).

Two months after the surgery, he was sent to the Arizona Diamondbacks in the trade that brought Curt Schilling to the Red Sox.

He missed the first 5+1⁄2 weeks to recover from surgery, but finished third on the Diamondbacks staff in starts (27), innings pitched (142) and strikeouts (117).

[5] Fossum signed a minor league contract with the San Diego Padres on August 22, but never pitched for them.

On January 24, 2008, Fossum signed a minor-league contract with an invitation to spring training with the Pittsburgh Pirates.

[6] At the end of spring training, he declined his assignment to the minor leagues and elected to become a free agent.

On June 3, his contract was purchased by the Tigers, after the DFA of right-handed pitcher Francisco Cruceta, and he was added to the active roster.