Jason Pierre-Paul is expected to miss approximately three months following his back surgery on Tuesday. Twelve weeks from that date is Aug. 27, which is 12 days before the New York Giants' season opener.

That doesn't mean the Pro Bowl defensive end will be ready for Week 1. In fact, not even Giants coach Tom Coughlin would state it that simply.

"That is an aggressive position to take," Coughlin said Thursday after the Giants' organized team activities session. "If anybody can do it, it's him. But I would like to wait and see and listen to what the professionals are telling him. That's the key right now."

Pierre-Paul has been dogged by back issues since his college days, but last season was the first time his performance seemed to dip because of the back. The former No. 15 overall pick had only 6½ sacks, 10 fewer than he registered during the Giants' Super Bowl season in 2011.

"It was obvious that he was in pain, and he was hurting, but he was trying to push through. That's the kind of player he is," defensive end Mathias Kiwanuka said of Pierre-Paul, who had to receive multiple injections to stay on the field.

"But at a certain point, it's hurting yourself and you're hurting your team. I think he realized that and decided to have surgery, which I think is the best thing for him at this point in his career."

The Giants and their doctors expect a full recovery for Pierre-Paul, who remains in California after the operation performed by Los Angeles-based spinal expert Robert Watkins, but there's obviously no guarantee that will be the case.