During a 5-on-0 drill during Wednesday's practice, freshman forward Johnny O'Bryant fractured the 4th metacarpal in his left hand, and surgery to stabilize the fracture was immediately scheduled for Thursday.
"I really feel for Johnny," Johnson said. "He was really starting to practice and really starting to play better. He will be out indefinitely."
O'Bryant, who was averaging 7.9 points and 6.2 rebounds a game, could miss as much as a month of action.
"He's our second-leading rebounder, he's 6-9, he's 250 (pounds)," said Johnson when asked what the Tigers lose with O'Bryant sidelined. "He's playing well and he's a starter.
"What does he lose? He loses the opportunity to play college basketball."
The absence of both players will likely mean more time on the court for senior forward Storm Warren and junior center Justin Hamilton, as well as more time in the post for wing players like Eddie Ludwig and Jalen Courtney.