The point guard scored 22 points during the 107-93 victory, which leaves the team fourth in the Western Conference standings.
The head coach told reporters: "It's what we expect. That's who he is. He's an aggressive player. He's a talented player that has improved every year. This is the guy that we all knew what he was going to do when he came back."
Westbrook added: "It was good for me. I'm still on the road to getting back to where I need to be."
Westbrook missed the end of the last season with a knee injury, undergoing two operations which kept him off the court for the first two games of the 2013-14 campaign.