And though he's no stranger to the rigors of Pitino's drills and workouts - this camp had a little different feel to it.
For one, it was the first time he's attended Pitino's camp since verbally commiting to play for the Cardinals last winter. It was also the first time Walker's younger brother - 5-foot-4, 12 year-old Marcus Walker - participated in the weekend-long camp. Macus, by the way, had a good camp in his own right, helping lead his team to the 3-on-3 team championship. And Walker also got a chance to test his skills against against former Louisville star and current NBA veteran Reece Gaines (According to various reports, Walker more than held his own).
But most of all, Walker found this weekend's camp to be the most intensly grueling - yet productive experience since first attending the Louisville camp as a middle schooler three years ago.
"I really enjoyed myself," Walker said. "It was the hardest camp of the three that I've been to. The coaches really worked us hard. It was just one drill after another with no stops, but it was good."
Larry Walker agreed with his sons assessment.
"I thought it was even better than last years camp," he said. "They really worked the guys hard all weekend, and Martez got a lot from it."
Walker also found success in the camps competitive phase, finishing second in both the 1-on-1 and 2-on-2 events. Walker lost to 6-foot-9 Taj Gibson in the 1-on-1 challenge, while his team fell in the finals of the 2-on-2 to 6-foot-2 Edgar Sosa.
"He's a cool guy," Walker said of Sosa, noting that he began to develop a friendship with his future Louisville teammate. "And a really good player."
Next up for the 6-foot-6 Walker will be next months Reebok ABCD Camp in Teaneck, New Jersey.