The Cardinals were in the Bahamas taking part in the Battle 4 Atlantis tournament when Dieng was injured.
Dieng, a junior who averages 8.2 points and eight rebounds per game, took a charge from Missouri's Phil Pressey with 2:04 to go in a semifinal game Friday and landed hard on his left hand.
X-rays showed a broken scaphoid bone, The (Louisvills, Ky.) Courier-Journal reoirted Sunday.
With Dieng out, Louisville will rely on sophomore Zach Price and senior Stephan Van Treese in the middle.
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