Are the reports of his Profit true? Pretty amazing, if it is.
Is there any rationale to thinking that this guy had access to inside-info which gave him an edge? Sounds impossible, given the NFL hard-line on Injury Report.
I'm going to guess that the reporters may have even got his bet stats wrong. A pro athlete has a lot of money to burn. He may have just deposited a lot and bet a lot. -110 is a small-margin game. His results could be +/- just based on variance.
I will give one anecdotal story. I saw a YOUNG Packer player playing blackjack in the Green Bay high-limit room. I'm sure his game-check was more money than he'd ever seen. Guy was popping huge bets close to table-max. No strategy, he'd lose, run to the ATM, do it again, rinse and repeat. Can only imagine how much money he blew thru, had to approach $10,000 in one nite.