Coach Jason Garrett (celebrating with Dez Bryant on Friday night) called Darrion Weems’s injury “pretty painful.” (Marcio Jose Sanchez / AP)

In a summer filled with headlines involving injuries at NFL training camps, the scariest comes from the Dallas Cowboys’ weight room.

Offensive tackle Darrion Weems dropped a 325-pound bar on his chest as he lifted it — and is expected to recover fully and miss very little time.

“He dropped the 325-pound bench press bar on his chest [Sunday],” Cowboys Coach Jason Garrett said (via the Star-Telegram’s Charean Williams). “So that’s what he is dealing with right now. He has a thumb issue where he can’t put his thumb around the bar, so it’s kind of an open hand and the thing just kind of rolled off on him. So that’s the issue there.

“We will see how he is day to day…. I’ve certainly seen it before in the weight room. Sometimes that happens or sometimes they have to throw the weight off of one side or throw the weight off the other side or whatever. We think he’s going to be back, but I’m sure it’s pretty painful.”

It could have been more than painful. Running back Stafon Johnson nearly died after a dropped bar ruptured his larynx during a weightlifting session at USC.

Follow @CindyBoren on Twitter and on Facebook.

Related: Jerry Jones’s Super Bowl prediction is…predictable