NEW YORK (CBSNewYork) – Giants defensive end Justin Tuck was not shy about his displeasure with the Giants’ performance in Week 1 against the Cowboys.

“I think every guy in this locker room is disgusted with how we played,” Tuck said following the defeat last week.

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But the two-time Super Bowl champion feels much more confident heading into Sunday’s matchup with the Buccaneers, and he attributes it to heightened intensity at practice.

“The energy in practice is, I think, double what it was last week,” Tuck said on Thursday. “I think a lot of that comes from our leadership, comes from (our) coaching staff. Guys seem to be a little bit more excited about playing football. I think last week we were a little sluggish.”

How could the G-Men — coming of an improbable Super Bowl victory — come out sluggish on national television against a hated division rival in Week 1?

Tuck’s guess is as good as anybody else’s.

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“You’re asking the million dollar question, I don’t know,” the two-time Pro Bowler admitted. “I wish I could give you the correct answer. Some things are unexplainable.”

Head coach Tom Coughlin, who admitted that practices prior to the season opener weren’t as strong as he would have liked, agreed with Tuck that preparation was at a different level this week.

“I think we’re getting better, I really do,” he said. “Yesterday, the effort was very good. The execution wasn’t as good as you’d like, but I probably can never say that. Today was, for the most part, pretty good. I didn’t think the last period was good. The effort, again, and the focus was better.”

Tuck made four tackles but wasn’t able to sack Cowboys quarterback Tony Romo in the season opener at MetLife Stadium.

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Justin Tuck is ready for Sunday! Are you, Giants fans? Sound off with your thoughts and comments in the section below…