Michael Crabtree suffered a torn Achilles tendon during Tuesday's OTAs and could need season-ending surgery.

Crabtree had a breakout season in 2012, catching 85 balls for 1,105 yards and nine touchdowns.

Crabtree also had 20 catches for 285 yards and three touchdowns in the postseason.

ESPN's Chris Mortensen reports that Crabtree has already undergone surgery.