Watch Roy Williams go full freak-out on a chair during North Carolina's upset loss

The North Carolina Tar Heels became the latest upset victims on Saturday in a 77-62 blowout loss at Miami. And Roy Williams didn’t handle it well.

After UNC’s Justin Jackson was whistled for an offensive foul and guard Joel Berry II picked up a technical foul in the first half, Williams completely lost it on the sideline — nearly going full Bobby Knight on this poor chair.

https://twitter.com/CBSSportsCBB/status/825414894111465472

It didn’t get much better after that as the Tar Heels trailed by 17 at the half and never got much closer after the break. The loss dropped ninth-ranked North Carolina to 19-4 on the season, and 7-2 in the ACC.

And Williams’ tantrum didn’t escape notice in the NBA, with Oklahoma City Thunder center Enes Kanter offering this warning:

https://twitter.com/Enes_Kanter/status/825426882363527169

In a fit of frustration during a win over the Dallas Mavericks on Thursday, Kanter punched a chair — fracturing his forearm and sidelining him for up to two months.