"I played with Justin Tuck and have a tremendous respect for him. But he has not been the same player emotionally, mentally or his play in the last three years. It's just the facts," Pierce said on The Michael Kay Show on ESPN 98.7 FM on Friday. "He came on late last season and once Antrel Rolle and a couple of other guys said he had to pick it up, but for the most part, he's a situation, third-down, passing situation defensive end."
He added: "When you watch him on Sundays, you do not see the energy, you do not see the fire he used to play with. And I don't know why. I don't know if it's personal stuff going on or maybe he's physically tired."