NFL

Ravens' Joe Flacco goes under the knife

BALTIMORE, MD - NOVEMBER 22: Quarterback Joe Flacco #5 of the Baltimore Ravens winces in pain on the final drive of the fourth quarter against the St. Louis Rams at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland. The Baltimore Ravens won, 16-13. (Photo by Patrick Smith/Getty Images)

BALTIMORE, MD - NOVEMBER 22: Quarterback Joe Flacco #5 of the Baltimore Ravens winces in pain on the final drive of the fourth quarter against the St. Louis Rams at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland. The Baltimore Ravens won, 16-13. (Photo by Patrick Smith/Getty Images)

Baltimore Ravens quarterback Joe Flacco was scheduled to undergo surgery Tuesday morning in Birmingham, Ala. to repair the torn ACL in his left knee suffered in Week 11 against St. Louis.

Renowned surgeon Dr. James Andrew performed the operation. At the time of surgery, it was unknown if Flacco would also need his MCL repaired or if it would be allowed to heal on its own, according to The Baltimore Sun. An MCL repair would likely add four-to-six weeks to Flacco's recovery time.

Head coach John Harbaugh indicated at the time of Flacco's injury that his quarterback would be ready for the start of training camp. The Ravens have endured a rash of injuries this season and currently sit at 4-8, a long way down from where they expected to be entering the season.

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