The 2013 MVP did not want to divulge any details, though.
Manning was seen carrying the ball during the 90-minute practice. Wide receiver Demaryius Thomas also carried a green football.
When pressed by the media about it, Manning went grade school.
"Like I said, that's official Denver Broncos offensive business, right? It's kind of an A and B conversation and you can C your way out of it," Manning said.
Well, I'm rubber and you're glue ... oh, forget it.
Unfortunately for the team captain, coach John Fox ratted him out, telling reporters the green footballs represented the team's fumbling issues last season.
"We're making an emphasis from Day 1 on ball security," Fox said, per the Denver Post. "We started with two of our better players in Demaryius and Peyton. What better guys to start with?"
Manning chucked the ball around with ease during his historic performance last season, now his coaches would like to remind him not to fumble away another Super Bowl opportunity.