Lonnie Johnson Jr., who appeared locked into a training camp battle with Jamal Adams for a starting role with Las Vegas, collided with stud defensive end Maxx Crosby and broke his fibula on Saturday, according to ESPN. The injury will end Johnson’s season before it began.

The safety had his lower right leg rolled up on during the first half of a mock game at Allegiant Stadium on Saturday and is feared to have suffered a major injury.