Toward the end of the third quarter, Green was fouled during a running jumper and landed awkwardly. He immediately began hobbling and rubbing his left knee. Moments later, the quarter buzzer sounded, and he retreated to the locker room.
Green told ESPN's The Undefeated on Tuesday night that his knee was "very sore." He was able to walk under his own power and said he didn't think the injury was major.
"I'll be good. I'm fine," he said.
Green is getting an MRI on his left knee Wednesday.
He had 9 points, 11 rebounds and 13 assists in 28 minutes during the 122-121 loss.
"He was the guy who was bringing the energy and the life," coach Steve Kerr said. "We didn't have much energy from most of our group tonight. ... When you are lacking conditioning, like we are right now, you have to have high-energy guys out there. As soon as he went out of the game, things went south for us. We just couldn't get any traction."