Thomas Robinson suffered a knee injury in the first half of Tuesday’s game between the Portland Trail Blazers and Denver Nuggets.

The team is listing it as a left patella strain and says he is day-to-day.

Robinson, 22, sustained the injury when he went up for a dunk attempt. Something occurred on his way down. He was only able to play three second half minutes due to severity of the pain.

“I tried to go back in there but I couldn’t,” he told CSNNW.com. “It was something I’ve never experienced before on this knee.”

Robinson is referring to the meniscus tear he suffered on his right knee while playing for the University of Kansas in 2011. From the looks of his facial expressions during postgame media availability, he was fearing he had done the same thing to his left leg tonight.