The New York Giants suddenly have added concern at defensive end.
With Jason Pierre-Paul still recovering from back surgery in early June, the Giants practiced Wednesday with fellow defensive end Justin Tuck sidelined by an undisclosed back problem.
Coach Tom Coughlin did not say exactly what was wrong, adding the team will wait and see if Tuck plays in its preseason opener at Pittsburgh on Saturday night.
Backs are a touchy topic.
Jason Pierre-Paul played 16 games last season with a sore back, but never disclosed the seriousness of the injury. He had disk surgery in June and he wasn't sure on Tuesday whether he would be ready to play in New York's season opener at Dallas on Sept. 8.