33-1 mayweather ko mosley in any of the last 4 rounds... Good bet??

Risky bet but it can happen. I give a 20% chance of it happening in the late rounds.

It's not a stupid bet IMO, Mosley won't give up, and this might lead him to take quite a bit of punishment late in the fight. This coudl lead to late stoppage. Not the most likely outcome, but Shane's heart might make it happen if he is behind. Mayweather does not push for stoppages, but when the other guy does not give up, and make it impossible for him to just potshot, sometime the KO/TKO arrives.

Shane has a granite chin and never looks hurt. Floyd has stopped 1 person in like 5 years. Don't waste your money.

If it is just 10 dollars, why not?

It will not happen. Mosley have never been Ko'd. Don't waste your money.

80-1 Shane to KO floyd round 1-3 66-1 Shane to KOfloyd round 4-12 Crazy Odds

highly unlikely it happens IMO, but if you're only betting 10 bucks on each round and it's spare money you have......go ahead