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Broncos Football

Denver Broncos QB Peyton Manning holds a football wrapped with a green helmet cover during an NFL football organized team practice at the Broncos training facility in Englewood, Colo., on Wednesday, May 28, 2014. (AP Photo/Ed Andrieski)

OTA practices - Peyton Manning watch

Yahoo Sports

Broncos quarterback Peyton Manning was carrying around football wrapped in a green sleeve during OTA practice. Manning refuses to answer questions about the mystery ball leaving fans perplexed.

Catch photos of the star quarterback preparing for the 2014 season.