Just call him Straight Cash "Money."

Boxing champion Floyd Mayweather reportedly scored a knockout against a Las Vegas casino this month by betting $1 million on Tom Brady's New England Patriots to beat Tim Tebow's Denver Broncos.

The Pats throttled the Broncos, 41-23, making Mayweather a six-figure winner whether he bet the point spread (New England was favored by seven points) or took the Pats to win straight up (New England was about a 3.5:1 favorite on the so-called "money line").

Mike Colbert, sports book director at M Resort, would neither confirm nor deny that Mayweather placed the wager when asked by the Las Vegas Review-Journal. He did say the fighter is "a valued customer who frequents the books quite often."

Mayweather has posted images of his big winning tickets on Twitter in the past, but no such pics have surfaced after the Dec. 18 Patriots-Broncos game.

He might be a bit distracted these days; he's scheduled to begin a 90-day jail sentence on domestic violence charges next week.