The Cowboys are in jeopardy of losing their left tackle for an extended period of time. According to ESPN, Tyron Smith suffered a torn left hamstring during Wednesday's practice that could cost him multiple months of the season. The 31-year-old was hurt on a running play and went to the ground as he tried to block Leighton Vander Esch. He was able to walk to the locker room without any help. Smith has not played a full season since 2015 as he has dealt with knee, ankle, neck and elbow injuries.