We all know how passionate you are about March Madness. At GoSportsBet we support the underdog, so here's an offer you can't refuse this college basketball season.

If you're predicting a money-line upset during this year's NCAA tournament, use the code MARCH15 before you wager. If your underdog pick loses, you'll get a rebate of between 1% and 15% depending on how big the upset was going to be. Here's how it works:

Each of the four brackets in the tournament is seeded from 1 to 16. For any match-up, subtract the favorite's seed from the underdog's seed. That is the amount you will receive back if you bet the underdog to win the game and they lose.

For example: You pick a 12-seed to beat a 5-seed. If they do, you get the massive underdog value. If they lose, you subtract 5 (the favorite's seed) from 12 (the underdog's seed) to find how much you get back: 7%!

A further example: You bet on a 14-seed to beat a 3-seed. If the 14th seed loses, you will be eligible for an 11% rebate (14 minus 3) of your wager for that game.

Note that standard bonus conditions apply. No other bonus codes may be applied in conjunction with this promotion.

Bonus Code: MARCH15

Duration: March 15th to April 4th, 2006

Amount: Depending on the size of the possible upset, a percentage of the losing money-line wager will be refunded to you.

Time: Will take up to 48 hours to credit rebate into the account.

Conditions: This promotion is only applicable to wagers made on the money-line and on wagers placed on the lower seeded team. Please submit the coupon (see below) within 24 hours of the start of the designated game(s). This rebate is applicable to all qualifying events that start within 24 hours of the receipt of this coupon.