Three heavyweight belts are on the line Saturday when Andy Ruiz fights Anthony Joshua in Diriyah, Saudi Arabia. The main event starts at 3:45 p.m. ET. Joshua is a -225 favorite, with Ruiz getting +175 as the underdog. You can also bet on each boxer's method of victory, how many rounds it will last and whether the fight goes the distance, among many wagering options.

Before you pick this fight, you need to see what Peter Kahn is picking. A fight game veteran with over 20 years of experience as a manager, promoter and adviser, Kahn has his finger on the pulse of what goes on inside and outside the ring. He can be heard weekly as co-host of "The Fight Guys" podcast on the SB Nation Radio Network.

Nobody knows the heavyweight division, or Joshua's tendencies, better. Last year Kahn called Joshua beating Joseph Parker by decision and that fight to go the distance. The year before, he called Joshua and Wladimir Klitschko both getting knocked down at 9-1!

Now, Kahn has scouted Ruiz vs. Joshua from every angle and locked in his best bets, including one that pays 5-1! You ABSOLUTELY need to see his three best bets before you make any picks of your own.

Who wins Ruiz vs. Joshua 2? How long does the fight last? And what prop bet should you make for a 5-1 payout? ... Join SportsLine right now to see Peter Kahn's best bets for Ruiz-Joshua, all from the fight game insider who owns the heavyweight division!