Duke star freshman Zion Williamson is being evaluated on a day-to-day basis and has been diagnosed with a Grade 1 right knee sprain, the school announced Thursday evening.
That means Williamson's status for Duke's road game Saturday night at Syracuse is undetermined.
Williamson left 34 seconds into No. 1 Duke's 88-72 home loss to No. 8 North Carolina on Wednesday night, .
Williamson, the established favorite for National Player of the Year, is averaging 21.6 points, 8.8 rebounds, 2.2 assists, 2.2 steals and 1.8 blocks. His 68.3 field goal percentage is second-best in the country to Gonzaga's Brandon Clarke (68.8). Williamson has also been the wire-to-wire leader in as well.
Duke is 23-3 and tied atop the ACC standings with Virginia and North Carolina; all three teams are 11-2 entering the weekend.
The Blue Devils still comfortably sit as a No. 1 seed in Jerry Palm's latest bracketology forecast.