49ers wide receiver Michael Crabtree not on practice field for organized team activities

San Francisco 49ers leading wide receiver Michael Crabtree is not on the practice field for Wednesday afternoon's organized team activity, though the team has provided no update regarding his absence amid reports he tore his Achilles tendon.

The 25-year-old Crabtree, the team's 10th overall pick in the 2009 draft out of Texas Tech, had career highs last season with 85 receptions for 1,105 yards and nine touchdowns for the NFC champion Niners, who lost 34-31 to the Ravens in the Super Bowl.

USA Today reported that Crabtree was hurt during Tuesday's OTA, citing an unidentified source. A torn Achilles tendon usually sidelines a player for several months, even as long as a year.

Eugene Parker, Crabtree's agent, did not immediately return messages from The Associated Press seeking comment.