ST. LOUIS -- North Carolina point guard Kendall Marshall says his broken right wrist is improving each day, but he's still not sure if he'll be able to play Friday night against Ohio in the Midwest Regional semifinals.

Tar Heels coach Roy Williams says he "just doesn't know" whether Marshall will be in the lineup, adding that the sophomore hasn't even been able to brush his teeth yet. Marshall wore a black brace on his wrist Thursday and did not practice. He says his range of motion must improve, and the pain will have to decrease in order to play.

The left-handed Marshall was hurt when he was fouled on a drive against Creighton. He had surgery Monday to install a screw in the wrist.

Marshall has scored in double figures for six straight games and has been the top-seeded Tar Heels' most irreplaceable player.

Tar Heels prepping to play without Marshall
Marshall has surgery on wrist following Creighton game