Zion Williamson day-to-day with knee sprain.

Coach K lauds 'really good workout' by Zion

The Hall of Fame coach expressed optimism that he could be ready for next week's ACC tournament in Charlotte, North Carolina. Duke (26-4, 14-3 ACC) is 3-2 in the nearly five full games without Williamson.

UNC coach Roy Williams said the Tar Heels (25-5, 15-2) wouldn't focus on whether Williamson would be ready. "We're still preparing like Zion's going to play,'' .