Petrino, who stated that the class of 21 players could increase by "two or three", added another player on Wednesday morning with the signing of New Iberia, La., Westgate defensive lineman Tae Thibodeaux.
At 6-foot-2, 260-pounds, Theibodeaux has been a force along the defensive front, recording double digit sacks as a junior and senior. While rated by Scout.com as the nation's No. 83 defensive tackle, he is projected to play defensive end at Louisville.
"They hired the Todd Grantham the defensive coordinator from Georgia and he is putting in the 3-4 defense," Thibodeaux told Cardinal Authority. "He wants me to play defensive end in the 3-4. I'm familiar with that type of formation because I played in a 3-5 alignment a lot."
Thibodeaux was close to signing with Nevada on signing day, but a late scholarship offers from Arkansas and Louisville put his decision on hold.
"It was crazy," he said of the last minute recruiting whirlwind. "I didn't know where I was going to end up. "Arkansas and Louisville both offered the night before signing day, which made me start to think about everything. I wanted to make sure I was going somewhere where I knew I would be happy. I visited Nevada and really liked it, but I had to make sure."
He pledged to Louisville following his weekend visit and signed his Letter of Intent at a ceremony at his school on Wednesday.
Impressed by all aspects of his visit, Thibodeaux ultimately chose the Cardinals over the Razorbacks for what he views as an opportunity to play for a proven coach that has national championship aspirations.
"I really like where Louisville is going," he said. "Petrino is a winner and I wanted to play for a winner. The defending national champion is in the ACC and with this new playoff, Petrino can get us there."