Dallas Cowboys owner Jerry Jones has admitted that his side have to be careful regarding defensive end DeMarcus Ware's injury.
Ware sustained a quadriceps injury in his side's win over the Washington Redskins and is expected to be out for a least a month.
"We're in good shape at running back [but] I wish we were in that good of shape at defensive end regarding Ware," Jones told radio station KRLD.
"We want to watch this. He's got the type of injury that if it comes back to fast, he doesn't have a tear there now, he doesn't have an imperfection.
"If he tries and goes to early, he could get an imperfection that's another world relative to how he'll be back."
The Cowboys currently lead the NFC East with a 4-3 record.
