Coach Kyle Shanahan said Tuesday that Mullens may need Tommy John surgery to repair the UCL in his right elbow, Matt Maiocco of NBC Sports Bay Area reports.

Regardless of whether surgery is necessary, the 25-year-old quarterback has already been ruled out for the season, and C.J. Beathard will take over under center. Mullens is still being evaluated, but if he needs Tommy John surgery, there's a chance he may be sidelined to begin the 2021 campaign as well.

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