ENGLEWOOD, Colo. — Left tackle Garett Bolles was carted off the field midway through Monday's practice with what Head Coach Vance Joseph later described as a head injury.

"Garett Bolles took a shot to the chin," Joseph said after Monday's practice. "He's being evaluated for a head injury."

Bolles, who went down during a run play to his side of the line, was able to leave the cart and walk into the Broncos' facility under his own power.

Linebacker Brandon Marshall also left the morning session early with what Joseph called "a minor wrist injury."

Tight end Jeff Heuerman missed the entire session with a sore knee.

"We're just being smart there," Joseph said. "No concern, just being smart for the long haul."

UPDATE (Monday afternoon): Bolles and Marshall both participated in Monday afternoon's walkthrough. Marshall wore a brace on his wrist, while Bolles appeared to have no limitations. Heuerman was not at walkthrough, nor was cornerback Tramaine Brock.

Other Monday availability news:

· Wide receiver Corey "Philly" Brown is in his second day of the concussion protocol after he hit his head in the weight room on Sunday.

"It takes some time for those things to clear, so we'll see where he's at," Joseph said.

· Joseph and Wide Receivers Coach Zach Azzanni have continued to reach out to wide receiver Carlos Henderson, who was designated Wednesday as Reserve/Did Not Report.

"Lots of guys have called Carlos," Joseph said. "Coach Zach's been calling him, I've been calling Carlos. His teammates have been. Obviously he's having some family issues he's working through, and it's really his timeline. He can return any time he gets ready to return. It's on him. But his guys are supporting him, his coaches are supporting him, so we're looking forward to having him back."

"We've had some conversations about other things than football. He's not ready for football right now, so we're not talking about football a lot. We're doing a good job as a team of checking on him on a daily basis."

· Cornerback Marcus Rios is day to day with a sore hip.