Jones was slowed by an ankle injury this month, but continued trying to practice. However, he also complained of a left shoulder injury even though he played in UK's first exhibition game here Sunday at the St. Denis Centre.
However, Kentucky sent Jones for a MRI in Detroit Monday and he was diagnosed with a stress fracture of the rib which was causing the pain in his left shoulder. Calipari hopes to have him back by mid-September when the Cats resume individual workouts.
"You can't say he's a momma's boy," said Calipari. "He cannot move his arm, but he practiced five to seven days."
Calipari says it is impossible to know when Jones was injured or how he did it. The coach said he could have been hit in practice, hurt it during weightlifting or just injured the rib during regular play. "A few things could have happened. We just don't know," Calipari said. "He just wants to play. First he had the ankle and then this. He's a good kid. He has a smile on his face because he at least knew what it is now."
Jones sat on the bench with UK coaches during the Wildcats' 96-68 win over Western Ontario Monday and was expected back in the same spot for today's game.
Martin Newton, UK's director of basketball operations, said Jones was in considerable pain most of Monday.
"He's a tough kid, but he was really hurting. He said when he went up to dunk that ball (Sunday) and tried to raise both arms and then got hit, it just really got him," Newton said. "He's a great kid and wants to be out there playing, but there's just no way to play with this kind of pain. You could tell he was really hurting."