'Somebody will step up': No. 3 seed Iowa State braces for North Carolina without star Niang

Iowa State's Georges Niang arrives at the AT&T Center using crutches for an NCAA college basketball tournament practice Saturday, March 22, 2014, in San Antonio. Niang, who broke his foot during Friday's game against North Carolina Central, with not play when Iowa State plays North Carolina Sunday. (AP Photo/David J. Phillip) (The Associated Press)

Iowa State's Georges Niang, center, arrives in uniform for practice for the NCAA men's college basketball tournament, Saturday, March 22, 2014, in San Antonio. Niang broke his foot during a game Friday night and will not play when Iowa State faces North Carolina on Sunday. (AP Photo/Eric Gay) (The Associated Press)

SAN ANTONIO – Iowa State coach Fred Hoiberg says he hasn't decided who will replace forward Georges Niang in the starting lineup now that his star sophomore is out with a broken foot.

Hoiberg said Saturday that the Cyclones can't replace their third-leading scorer with just one player. No. 3 seed Iowa State plays sixth-seeded North Carolina on Sunday in the third round of the East Regional.

Niang broke his foot in Friday's night win over North Carolina Central. Losing the 6-foot-7 sophomore creates tough matchups for Iowa State against the tall and athletic Tar Heels.

The Cyclones (27-11) haven't reached the round of 16 since 2000. North Carolina (24-9) fell in the third round last year, but the Tar Heels have never exited this early in consecutive seasons under coach Roy Williams.