But the Cardinal Mooney High School guard said he's still pumped up.
"I still have to pinch myself," McMahon said. "I was so focused on our season and we made it to the Final Four before we got beat by a very good Sagemont team.
"Now, I'm ready to be a Cardinal."
McMahon, who visited for the North Carolina game in late January, will be back on campus this weekend. He was expected to arrive late Thursday night - pending weather delays - with his mother and his father will join them on Friday.
"I'm looking forward to seeing more of the campus, getting to see more of campus life," McMahon said. "My mom didn't come with us (the first trip), so she wanted to come up. I'm excited to get there and we're going to see a great game."
McMahon will be in attendance for Saturday's game against Virginia.
The 6-foot-1, 175-pound McMahon has created quite a buzz this season in Florida, averaging just under 30 points a game at Cardinal Mooney.
Pitino found McMahon recently - after a tip from ESPN's Dick Vitale - when he watched in him a game at Cardinal Mooney. Assistant coach Mike Balado had seen him in practice and assistant coach Wyking Jones and Balado went back to see him a few weeks later.
The night the two assistants watched him, Pitino offered McMahon. he accepted the offer the next morning and will sign next month with the Cardinals.
McMahon, who only weighs 175 pounds but has a vertical jump of 39 inches, averages just under 30 points a game for a 25-4 Cardinal Mooney team that played in Class 3-A in Florida. He scored 26 against LSU signee - and former U of L commit - Antonio Blakeney earlier this season in a game where he fouled out in the third quarter.