Brooklyn Nets star Kevin Durant exited Sunday’s game against the Miami Heat in the first quarter with a left thigh contusion and did not return, according to ESPN’s Malika Andrews.

Durant appeared to get tangled up with Miami’s Trevor Ariza when he went to the basket for a layup. The 32-year-old was playing in his fifth game since returning from a hamstring injury that sidelined him for almost two months. 

Durant has been one of Brooklyn’s best players this season, averaging 28.1 points, seven rebounds and 5.4 assists per game while shooting 53.9% from the field and 45.4% from deep. 

It’s unclear if the four-time scoring champion will miss an extended period of time. 

If Durant does miss time, it won’t be a good sign for the Nets, who are also without James Harden, who is dealing with a hamstring strain. Brooklyn is second place in the Eastern Conference with a 38-18 record, but it’ll be difficult for the team to eclipse the Philadelphia 76ers for the top spot without Durant available.