If you think you can produce the perfect March Madness bracket you could rake in millions of dollars from the contests being offered by sportsbooks.

If you're going to do the rounds of the sportsbooks' contests your first stop should be Sportsbook.com. This year's Sportsbook.com March Mania Perfect Bracket contest has a top prize of $14 million. That's quite a hefty prize even if filling out a perfect bracket is a million-to-one longshot. Even if no one picks a perfect bracket, and it's highly unlikely, there's still guaranteed prize money in their Sweet 16 bracket contest.

It may not be as high as $14 million, but at BetUS they're offering a top prize of $5 million in their March Mayhem Perfect Bracket contest. There is also guaranteed money in their $10,000 Round of 16 and $10,000 Round of 8 contests.

Finishing off the million-dollar prize pools is the $1,000,000 Madness of March Contest at SBG Global. The top prize for a perfect bracket is $350,000, but more importantly is that there is also $200,000 available for second place, $100,000 for third place, and $50,000 for fourth place. There are also a number of $12,000 prizes for fifth to 30th place.

If you're looking for guaranteed money one of your best options is the Bodog Bracket Buster contest. Their guaranteed prize pool is $25,000, more than that being offered by BetUS and Sportsbook.com.

At BetED their Bracket Pick'em contest is back with a prize pool of $10,000. That may seem small compared to some of the other books' prizes, but I'd still take a few thousand dollars for free if someone's offering it.

Other March Madness contests available heading into the tournament include the $50,000 Bracket Buster at Bookmaker, the NCAA Power Points Challenge at SportsInteraction.com, and the Bracket Madness contest at Diamond.