In Lucas' place on Sunday, Korie Lucious made a three-pointer at the buzzer to put the Spartans into the round of 16 with an 85-83 win over fourth-seeded Maryland.
Lucas was hurt late in the first half of that game when he landed awkwardly after a shot. He is a two-time All-Big Ten player and leads the Spartans in points and assists.
He will be sidelined for four to six months.
"We feel terrible for Kalin, he was having a great NCAA Tournament," Spartans coach Tom Izzo said in a statement. "The good news is there is no doubt he will make a full and complete recovery.''
Izzo hopes his team lost only Lucas.
Chris Allen was limited to four minutes against the Terrapins because of an injury to the arch in his right foot, Delvon Roe hobbled on his surgically repaired right knee and Raymar Morgan played with a broken tooth.
"We've got a 'MASH' unit," Izzo said. "The bottom of Chris' foot is purple, Delvon is playing on one leg and Raymar looks like a hockey player with his tooth cut in half.''
Penders steps downTom Penders resigned as coach at Houston, ending a six-year tenure that culminated in the Cougars' first trip to the NCAA Tournament since 1992. The Cougars lost to Maryland, 89-77, in the first round Friday night.
Penders, 64, said he has no retirement plans and that it's simply time to find another challenge.
Memphis loses appeal
Memphis must vacate its record 38-win men's basketball season from 2007-08 after the NCAA rejected its appeal.
The NCAA announced yesterday that its Infractions Appeal Committee ruled against Memphis, which was found to have used an ineligible player, believed to be Derrick Rose. The Tigers, coached by John Calipari, lost in overtime to Kansas in the national title game that season. - AP