Getty Dallas Cowboys offensive tackle Tyler Smith. If you were under the impression everything was OK with Dallas Cowboys offensive lineman and NFL All-Pro Tyler Smith following the season because he participated in the Pro Bowl Games … well you’d be wrong. On Tuesday, the Cowboys disclosed Smith underwent offseason knee surgery following the Pro Bowl. “All-Pro OL Tyler Smith had cleanup surgery on his right knee after the Pro Bowl but will be 100% ready for the offseason program, per sources,”