Zion Williamson left Friday's Summer League debut after taking a knee-on-knee hit and will not return, the team announced. 

According to ESPN's Cassidy Hubbarth, the injury is not believed to be serious as the Pelicans are taking a cautious approach with their No. 1 pick.  

Prior to the injury, Williamson had 11 points and three rebounds on 4-of-9 shooting prior to his departure. 

But that wasn't the only snag in Williamson's debut.

In the third quarter, play was halted after an earthquake struck the Los Angeles/Las Vegas area of Nevada and Southern California. Players were sent to the locker rooms following the quake and the game was eventually postponed. 

The Pelicans were leading the Knicks 80-74 at the time of the earthquake.