Source: Sixers' Jason Richardson out for season with knee injury

Yahoo! Sports

Philadelphia 76ers guard Jason Richardson learned Wednesday he will miss the rest of the season due to a left knee injury that requires surgery, a source told Yahoo! Sports.

The 12th-year veteran was told by a doctor in New York City that he has a cartilage tear the size of a quarter on the right side of his left kneecap. Richardson is expected to be out six to nine months following surgery that is expected to take place next week.

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Richardson had missed the previous seven games after being diagnosed with synovitis in his left knee. He finishes the season averaging 10.5 points and 3.8 rebounds while starting in all 33 games he played in during his first season with Philadelphia. He is under contract through the 2014-15 season.

[Related: Pau Gasol could miss 6-8 weeks with foot injury]

Nick Young is expected to start in Richardson's place.

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