The Las Vegas Raiders suffered a significant injury during Sunday's training camp practice when safety Lonnie Johnson Jr. broke his fibula after colliding with teammate Maxx Crosby, according to ESPN.

The Raiders are down a safety in training camp. 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,

On Sunday, ESPN's Adam Schefter reported the Las Vegas Raiders safety suffered a broken fibula during the team's Saturday practice at Allegiant Stadium. Johnson had to be carted off the field after he collided with defensive end Maxx Crosby while trying to tackle running back Raheem Mostert.