JJ Nelson, who ran the fastest overall time at the NFL combine, is confused why he hasn't been paid $100,000.

Adidas said it would pay the top three fastest players who ran the 40-yard dash in its shoes and signed a contract to endorse the brand before they ran $100,000.

When Nelson went to the player suite where he had a choice to run in the latest models form Nike, Under Armour and Adidas, he said he chose Adidas not only because the shoes were comfortable but because he was aware of the $100,000 prize.

"I wasn't completely focused on it at the time," Nelson told ESPN.com. "I was obviously focused on getting a good time first."

An Adidas news release said that the offer was "open to the athletes who sign with adidas prior to running their official 40 yard dashes later this month," but Nelson said he wasn't ever given a chance to sign with the brand.

"I signed some waiver at some point, but I was never given a chance to sign an endorsement deal," Nelson said.

Nelson is projected as a late round pick.