Damontre Moore may have pile-driven his own Giants career along with Eagles quarterback Sam Bradford on Monday night. The talented but unpredictable third-year defensive end drew a debilitating roughing-the-passer penalty for lifting Bradford up and slamming him to the ground after a third-down stop for the Giants when they still held an early 7-0 lead in what turned out to be a 27-7 loss.

It's not the first time Moore has committed an incomprehensible penalty. But it may be the last. Tom Coughlin was asked on Tuesday if he can trust Moore to be on the field and not make costly mistakes.

"I can't really honestly say that," Coughlin said.

Moore leads the team with three sacks, but his career has progressed slowly and his snap counts never have been very high because of deficiencies in his game, mostly against the run. Now that he has lost Coughlin's trust -- and veteran Robert Ayers is poised to return after missing four games with a hamstring injury -- he may be eliminated from the defensive end rotation.

"He's obviously high-energy and he does give outstanding effort, there is no question about it," Coughlin said. "But with regard to that there is absolutely no excuse for anyone for the unnecessary roughness penalty that he committed [Monday] night . . . Clearly, clearly, not to understand the way in which the quarterback is protected, and rightfully so, and what can and can't be done from the standpoint of his position, I mean, there's no excuse for that. You use the word 'trust.' I don't know. That's a good word."

After the game, Moore rather calmly explained what went wrong on the play from his perspective.

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"Honestly, I think it was just me having a poor football IQ and not being aware of the rules of dumping him, because I dumped him," Moore said. "I was just trying to make a play and be a high-energy guy . . . I have to get my football IQ and awareness up and get a better understanding of the rules so I can eliminate those penalties."

Coughlin said he will discuss the situation with Moore -- as he has for past infractions.

"There's been a lot of sitting down and talking," Coughlin said. "I certainly will do more of it and he is very good about listening, etc., etc., but we've got to see whether it can hold true on the field."