Carlos Guillen has announced his retirement.

The news comes as a bit of a shock. Guillen agreed to a minor league contract this past winter with the Mariners and had a good chance of claiming a backup infield job this spring in camp. He finishes with 1,331 career hits, 124 career homers and a .285/.355/.443 career batting line. The 36-year-old played for only the Mariners and Tigers during his 14-year major league career.

Carlos Guillen was held out of practice for the second straight day because of calf tightness.

Manager Eric Wedge said he expects Guillen to sit out on Sunday, as well. The 36-year-old can't be counted on as an everyday player anymore, but figures to be useful in a part-time role with the Mariners.

Enrique Rojas of ESPN Deportes Los Angeles reports that the Royals, Marlins, Twins, Athletics, and Mariners are interested in free agent infielder Carlos Guillen.

Guillen batted just .232/.265/.368 over 102 plate appearances this past season for the Tigers and probably can't be counted on for an everyday role at this point with his checkered injury past. The 36-year-old could be a low-risk, potentially moderate reward if he did manage to stay healthy, though.