THOUSAND OAKS, Calif. (AP) — Bernhard Langer withdrew from the PGA Tour Champions’ playoff opener Friday because of a left knee injury.

The 59-year-old German star pulled out before teeing off at Sherwood Country Club in the PowerShares QQQ Championship. He re-aggravated the injury at home doing routine spinning, had an MRI on Monday and wasn’t able to play a practice round.

Langer leads the 50-and-over tour with four victories and has wrapped up the season money title with $2,697,459. He tops the Charles Schwab Cup Playoffs standings, and has a big enough advantage over second-place Miguel Angel Jimenez that he will keep the No. 1 spot without playing this week.

The top 72 players on the money list earned spots at Sherwood. The playoff field will be cut to 54 for the Dominion Charity Classic next week in Richmond, Virginia, and to 36 for the Charles Schwab Cup Championship the follow week in Scottsdale, Arizona.

Each dollar earned in the first two events is worth two points and will be added to the regular-season total. At the Charles Schwab Championship, points will be reset so that the top five only have to win to capture the Charles Schwab Cup.

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