Guard Nate Livings suffered a hyperextended knee in practice on Wednesday. The Cowboys don't believe the injury is serious and will list him as day to day, according to coach Jason Garrett.
Still it was another blow to the interior offensive line which opened camp with center Kevin Kowalski and guard Mackenzy Bernadeau on the phyically unable to perform list because of injuries suffered in the offseason. Center/guard Bill Nagy suffered a high ankle sprain two days into camp and will be sidelined for an extended period.
Undrafted rookie Ron Leary replaced Livings in the starting lineup on Wednesday.