LAS VEGAS -- If you think Los Angeles Clippers fans were excited about their 24-point fourth-quarter comeback against the Memphis Grizzlies last night, Floyd Mayweather might have had them beat.

According to Twitter user "Incarcerated Bob," Mayweather, who has quite the affinity for sports betting, had $1.8 million riding on the Clippers last night across seven different sports books in town.

He cited user "TeamMoneyPicks" as the source for his information, who…