Fryman made the announcement now due to the fact that if the players' association goes on strike, Wednesday night's game against Detroit could be his last.
Coincidentally, Fryman began his career with the Tigers, so he thought that added a little incentive.
The 33-year-old Fryman had spoken with general manager John Hart earlier in the year about his decision to retire.
Fryman, who began his career in 1990, has spent some time on the DL this season because of inflammation in his right shoulder, the one that required off-season surgery.
In 104 games this season, Fryman is batting just .214 with nine homers and 47 RBIs.
A five-time all-star, Fryman's career went backwards after tearing a ligament in his right elbow in 2001.
The elbow injury led to the shoulder problems he has been suffering though.
A career .274 hitter with 221 home runs and 1,014 RBIs, Fryman enjoyed his best campaign in 2000 when he batted .321 while ripping 22 homers and driving in 106 runs.
