Moore suffered a lower-leg injury in the final minute of the Elite Eight win over Houston.
X-rays showed no broken bones, but Moore will have to have further tests, according to coach Jay Wright.
Wright said that it was probably not good for Justin. It is probably not good.
Moore had to be helped off the court after slipping while driving to the lane with 35 seconds left in the game. All of his teammates came to see him at the end of the bench when the final buzzer sounded.
Moore went to the locker room on crutches.
The star guard said he knows what it feels like. We do not know what the injury is. He needs to be checked. I don't want to see him alone. He is one of our best offensive players and always guards the best player, and will do anything for any one of our guys on either end of the floor.
A lot of our guys ran to him because we are not in a position to do without him. We wanted to go over to him and thank him for what he does for us.
Samuels had an injury to his knee that happened last March.
Samuels said that he knew something wasn't right, but he still didn't know what it was.
Moore had eight points and two assists in 37 minutes against Houston. He leads the team in points and assists and is third in rebound and points.
If Moore misses the Final Four, Daniels will start. Daniels had 12 points in 35 minutes. He shot 38.2% from 3-point range.
The biggest impact will be felt on the bench. Chris Arcidiacono and BryanAntoine will get more minutes. Arcidiacono has played six minutes in the last three games, whileAntoine has played eight minutes in the last two games.