But a left hip injury hampered him the second half of 2008. He appeared in 65 games and batted .238 with two home runs and 23 RBIs.
On Oct. 1, Treanor underwent a "sports hernia" surgery, which essentially repaired tears in his left hip area. The injury requires about six weeks of recovery, and Treanor should be healthy for the start of Spring Training.
By releasing Treanor, the Marlins' 40-man roster is now at 39, which means the team now can participate in Thursday's Rule 5 Draft. Teams must have fewer than 40 players on their roster to take part in the Draft.
The husband of U.S. Olympic beach volleyball gold medalist Misty May-Treanor, Treanor spent 10 1/2 seasons in the Minor Leagues before getting his big league break in 2004. He has primarily been a backup, although he started a majority of the first half.
Treanor went on the disabled list on July 8 with a strained left hip. He was replaced on the roster by John Baker, who went on to win the starting position.
Without Treanor, the Marlins will be looking for catching depth. Max Ramirez of the Rangers is a possibility.
If Ivan Rodriguez, a free agent, is still on the market in January, the Marlins may make a pitch for the veteran.
Joe Frisaro is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.