Seven of Louisville's 12 official visitors this weekend already had verbally committed to Charlie Strong's Cardinals and those players, according to Epps, Robinson-Berry and Mack, developed good chemistry this weekend.
Louisville's coaching staff told Epps, a three-star offensive lineman from Tucker, Ga., that if he can increase his weight from 240 to 260 or 265 he'll have a chance to play next season.
"They expect for me to come in and compete for a spot and possibly start if I can get up to the weight I am supposed to be," Epps said. "Coach Strong told me himself if I get my weight where it's supposed to be I could compete for a spot. No one wants to redshirt, and they hope I can play."
Louisville has suggested a high calorie diet for the 6-foot-7 offensive lineman before he gets to campus this summer.
"I talked to the nutritionist and she gave me an eating program," Epps said. "I have to start lifting weights because I have six months before I have to report for school July 5th. They want me to eat a lot of carbs and they want me eating 3,400 calories per day."
Epps said one of the highlights of his visit was the greeting the recruits received at the Louisville-Marquette basketball game at the KFC Yum! Center Saturday.
"The fans were ridiculous when we came in. It was a place you want to be," said Epps. "The whole stadium was clapping, and it was real exciting."
Robinson-Berry, a three-star cornerback from Indianapolis, had made several unofficial visits to Louisville during the season, but enjoyed hanging out with his future teammates over the weekend.
"I enjoyed spending time with the coaches and some of the recruits," Robinson-Berry said. "It was great hanging around the [commitments] and getting to know them. I'm looking forward to playing with them."
Robinson-Berry said he felt right at home at Louisville.
Mack, a three-star offensive lineman from Memphis, could factor into Louisville's plans next season.
"It went really good," Mack said. "I had a good time and I got a chance to bond with my future teammates. The commits got to know each other better and we developed good chemistry. We really bonded this weekend."
Mack said both Strong and offensive line coach Dave Borbely spoke with him about preparing himself to play as a freshman.
"They talked to me and told me about the depth chart and said if I come in with my head straight I could compete for the starting spot at left tackle," Mack said. "Coach Strong has a good program and I'm ready to get up there."
Epps, Mack and Robinson-Berry each said they are solid in their commitments to Louisville, have no plans to visit other schools, and plan to sign with the Cardinals next month.