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There are few things more frustrating in sports betting than building the perfect Bet Builder, watching most of your selections land, and then seeing the whole slip undone by a single missed leg. Unibet’s weekly US Sports Bet Builder promotion is designed precisely for those moments. Instead of walking away empty-handed, you get rewarded for being close — very close — with a Free Bet that puts you right back in the action.
This promotion focuses on two of the most popular US sports leagues: the NBA and the NFL. Both offer deep markets, endless player props, and ideal conditions for Bet Builders. With this offer, Unibet encourages bettors to think big and build multi-leg wagers, while providing a safety net if things don’t go exactly to plan.
At the heart of the promotion is a simple promise. Place a qualifying Bet Builder on NBA or NFL markets with three or more legs and minimum total odds of 2.00. Stake up to £10. If your bet loses by exactly one leg, Unibet will refund your stake as a Free Bet Builder of the same value, capped at £10. It’s not insurance against a bad bet — it’s a reward for being just one step away from getting it right.
The offer runs on a weekly cycle, resetting every Monday at 00:01 and remaining available until 23:59 on Sunday. Each customer can take advantage of it once per week, making it a consistent feature rather than a one-off gimmick. That weekly reset is important, because it allows you to plan ahead and incorporate the promotion into your regular betting routine on US sports.
Getting involved is straightforward and user-friendly. First, you must opt in by selecting the promotion box in your betslip — this step is essential. Then, build your Bet Builder on any NBA or NFL market. You can combine team results, spreads, totals, player points, rebounds, touchdowns, yards, or other eligible selections, as long as they are part of a single Bet Builder and total at least three legs. The combined odds must reach a minimum of 2.00, and your stake must be between £1 and £10.
Once your bet is placed, it behaves like any other Bet Builder. If all selections win, you receive your full winnings as normal. If the bet loses by two or more legs, it settles as a standard losing bet with no refund. But if just one leg lets you down, that’s where the promotion comes alive. After the bet is settled, Unibet credits your account with a Free Bet Builder equal to your original stake, up to £10.
One of the most attractive features of this promotion is the flexibility of the Free Bet. Although the qualifying wager must be placed on NBA or NFL, the Free Bet itself can be used on any sport available on the Unibet sportsbook. This means you’re not forced straight back into US markets if you’d rather use your second chance elsewhere. Whether it’s football, tennis, or another NBA or NFL fixture, the choice is entirely yours.
The Free Bet is credited once the qualifying bet has settled and is valid for seven days. This gives you a reasonable window to find the right opportunity, without letting the bonus linger indefinitely. As with most Free Bets, the stake is not returned with any winnings — only the profit from a successful Free Bet is paid out as cash.
There are several important conditions attached to the promotion, and understanding them helps avoid disappointment. The qualifying Bet Builder must be placed using real money only. Bets placed with Free Bets, Bonus Money, Uniboosts, or any other promotional funds do not count. The maximum qualifying stake is £10, and the maximum Free Bet you can receive is also £10, regardless of how much you stake above that amount.
Only Bet Builders with a minimum of three legs qualify, and they must be placed exclusively on NBA or NFL markets. The minimum odds requirement of 2.00 applies to the overall Bet Builder, not to individual selections. Crucially, the refund applies only if the bet loses by exactly one leg. If more than one selection fails, the Free Bet will not be awarded.
This promotion can be redeemed once per promotional period, which runs weekly. Even if you place multiple qualifying Bet Builders in the same week, only one can trigger the Free Bet refund. Customers must also actively opt in to the offer for each promotional period by selecting the offer box in the betslip.
Standard Unibet Terms and Conditions apply throughout. The promotion is available only to individuals aged 18 or over who are fully registered with Unibet. Employees of Unibet and its affiliated companies, as well as their family members, are not eligible to participate. Promotions are generally limited to one per customer and cannot be combined with other Unibet offers unless explicitly stated.
Unibet reserves the right to withhold, restrict, or cancel the promotion for any customer acting against the spirit of the offer. This includes attempts to manipulate outcomes, exploit low-risk betting strategies, or engage in behaviour considered bonus abuse. Any such activity may result in the forfeiture of bonuses, reclaimed winnings, or even account closure.
The aim of this promotion is not to eliminate risk, but to enhance enjoyment. It recognises that Bet Builders are about calculated ambition — combining insight, intuition, and analysis. By offering protection against the most painful type of loss, Unibet makes betting on NBA and NFL more forgiving, more engaging, and ultimately more fun.
For fans of US sports, this weekly Bet Builder refund adds genuine value. It encourages creativity, rewards close calls, and ensures that one unlucky moment doesn’t have to be the end of your betting weekend. Build your bet, opt in, and if you miss by one, Unibet gives you another chance to get back in the game.
















