Cowboys' Charles Tapper: Suffers setback with back injury

Tapper (back) suffered a setback with his back injury and doesn't know when he'll be cleared, Clarence Hill of the Star Telegram reports.

Analysis:

Tapper said the situation is frustrating after his back flared up again just as he was close to being cleared. Look for more updates to come as the week goes on, but it doesn't seem likely that he'll be ready for Week 4.