DENVER -- Outfielder Cameron Maybin, currently on an injury rehabilitation assignment with Triple-A Tucson, has not played since Aug. 6 because of soreness in his right knee.
Maybin, who has been on the disabled list since June 12 with a tear in his posterior cruciate ligament, is able to run about "75-80 percent" in the outfield, said Padres manager Bud Black, and has also been hitting in the cage with Tucson.
It is not known when Maybin will return to the Padres' lineup.
Maybin has hit .268 in 14 games with Tucson with four home runs and five RBIs.
The Padres did not have a predetermined number of games or at-bats for Maybin in Tucson before they planned to reinstate him from the disabled list.
The 2013 season to this point has been a loss for Maybin, who has played in only 14 big league games. He missed 45 games with an impingement of his right wrist and returned briefly before injuring the knee.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.