Dak Prescott‘s injury may be more serious than initially thought. According to Calvin Watkins of The Dallas Morning News, Prescott is dealing with a partial avulsion of his right hamstring tendon and Dallas Cowboys officials are now trying to determine whether or not he needs surgery, or if the injury can heal on its own. CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once you play $5 in lineups! If Prescott goes through with surgery, it will effectively end his season, per the report. However, Prescott is still trying to obtain multiple opinions on the matter. Tha…