Jets running back Thomas Jones wasn't about to take another day off just because it was Labor Day. For the first time since he injured his right calf on Aug.12, Jones suited up yesterday and practiced with his teammates. Eric Mangini, always secretive when it comes to injuries, would not comment on Jones' rehabilitation or speculate on his ability to play when the Jets open the season Sunday against the Patriots. According to NFL rules, the Jets do not have to release a list of injured players until tomorrow.