In his first game since undergoing a second knee operation before the pre-season training camp, Westbrook scored 21 points and provided seven assists as the Thunder eased past the Phoenix Suns, but the point guard believes he was far from at his best.
"I was comfortable. Very comfortable. I'm making any move I want," the 24-year-old told reporters.
"I missed some easy ones that I usually make, but that will come. It could be better. It was alright.
"But that's expected. I didn't expect to come back and be bionic man."
The Thunder host the Dallas Mavericks in their next game on Wednesday night.