Gobert contested Williams on a drive to the rim with 9:22 to go in the second quarter, causing Williams to fall to the ground. Gobert tripped over Williams and while down on the court appeared to sweep a leg out in an attempt to trip Williams when the Thunder forward was attempting to get up.
A brief scuffle ensued, after which Gobert was assessed a flagrant foul 2 and ejected. Williams received a technical foul.
Gobert finished the night with six points and four rebounds in nine minutes.
The Timberwolves are already shorthanded in the frontcourt, with All-Star forward Karl-Anthony Towns sidelined indefinitely with a calf injury.