With the Broncos having used a second-round draft pick on running back Montee Ball, Ronnie Hillman lining up in the backfield with the starters and with the news of Willis McGahee's absence, Knowshon Moreno has been overshadowed.

Moreno had a stem-cell procedure done on his troublesome knee this year and has been limited in the Broncos' offseason work.

"He's coming along," coach John Fox said. "We're going to be very cautious. When the doctors give him the full-go go-ahead, he'll be doing everything."

Moreno, a first-round pick in the 2009 draft, will be part of an intriguing battle in training camp at a crowded position.