BestFightOdds.com had the odds at

Andrei Arlovski +400
Fedor Emelianenko -600

earlier today, and they’ve already shifted to

Andrei Arlovski +325
Fedor Emelianenko -475

If you plan on betting on Arlovski, my advice would be to wait, as the line will continue to move, likely with Arlovski as an even heavier underdog a couple weeks before the fight and with it being much closer around fight time.