Redskins wide receiver Leonard Hankerson had surgery on Thursday to repair torn lateral collateral and anterior cruciate ligaments in his left knee.

The torn ACL was suspected by doctors, but not confirmed until surgery. According to Washington coach Mike Shanahan, that ligament had a 90-percent tear. Hankerson was injured during the second quarter of Sunday’s 24-16 loss to the Philadelphia Eagles and will not return this season. His rehabilitation program is expected to last seven-to-nine months, Shanahan said. That likely means Hankerson would miss the team’s entire offseason program.

“It’s a huge blow any time you lose one of your better players,” Redskins offensive coordinator Kyle Shanahan said. “Hank is a guy we really rely on in certain citations and I felt strongly that he’s been getting a lot better.”