Westbrook shoved Murray while the two were lining up for a jump ball, leading to words being exchanged. Both were assessed technicals.
"He was in my way," Westbrook said afterward, according to ESPN's Royce Young.
Murray had another view.
"I was standing in my spot, he tried to step over me, and then he shoved me first," Murray said. "I guess they were losing or whatever, so I don't know, ask him ... like I said, I didn't do anything. It was probably because he was losing."
The Thunder have had trouble with the Nuggets over the last two years. They're 0-2 against them this season, and have lost their last three games in Denver.