Watch: Duke's Zion Williamson Throws Down Thunderous Tomahawk Dunk vs. UNC

Zion Williamson is at it again.

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Zion Williamson is at it again.

Duke's freshman phenom left fans speechless with his tomahawk breakaway dunk over North Carolina on Friday night in the ACC tournament semifinal. With 9:52 left on the clock, Williamson made his way down the court and caught some serious air en route to the basket. Williamson's thunderous dunk put the Blue Devils up 63–58.

Even Jazz star Donovan Mitchell was in awe of Williamson's dunk.

Williamson made his presence known against rival UNC. He scored 31 points with 11 rebounds and went 13-for-19 from the field in only the second game since returning from his knee injury, which he suffered on Feb. 20 against the Tar Heels.

Duke beat North Carolina 74–73 to advance to the ACC tournament final, where it will face Florida State on Saturday night at 8:30 p.m. ET.