DraftKings First Four Mystery Offer
The opening tip of the postseason always brings drama—and now it also brings a mystery. DraftKings is rolling out its First Four Mystery Offer, giving sportsbook users a chance to unlock a surprise profit boost for college basketball bets during the opening slate of games on March 17–18.
Opt in during the promotional window, and you’ll instantly receive one mystery betting boost, randomly selected from four different rewards. Whether it’s a massive 100% boost or a live-betting upgrade, every player gets something.
Want help finding the best bets? Check out the latest March Madness odds, expert picks, and matchup breakdowns before locking in your wager.
First Four Mystery Offer: Quick Highlights
- Promotion Period: March 15, 2026 – End of the final college basketball game on March 18
- Eligible Bets: College basketball wagers on March 17–18
- Reward Type: One random profit boost token
- Minimum Odds Requirements:
- +200 for the parlay boost
- -200 or longer for all other boosts
- Bet Types Allowed: Singles, Parlays, Same Game Parlays (SGP), and SGPx, depending on the token
- Expiration: All tokens expire after the final college basketball game on March 18
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How to Unlock the First Four Mystery Boost
Getting your mystery reward only takes a few steps.
- Opt In to the Promotion
Find the First Four Mystery Offer in the DraftKings promotions tab and activate it.
- Receive Your Mystery Token
After opting in, the system instantly awards your random boost.
- Select the Token in Your Bet Slip
Before placing a bet, choose the boost in the bet slip to activate it.
- Place Your College Basketball Bet
Use the token on qualifying wagers for games played March 17–18.
Possible Mystery Rewards
Once you opt in, DraftKings assigns one of four boosts based on preset probabilities.
- 30% All-Parlay Profit Boost (Most Common)
- Minimum 2-leg parlay
- Minimum odds +200 or longer
- Works on traditional parlays, SGP, or SGPx bets
- 25% All-Purpose CBB Profit Boost
- Minimum odds -200 or longer
- Valid for singles, parlays, SGP, or SGPx bets
- 100% All-Purpose CBB Profit Boost (Top Prize)
- Minimum odds -200 or longer
- Can be used on single bets or parlays
- 30% Live CBB Profit Boost
- Valid for live bets only
- Applies to single wagers or live SGP bets
Every participant receives one reward, but the type of boost is randomly assigned.
Mystery Reward Odds
Here’s how the probabilities break down:
| Reward | Chance of Receiving |
|---|---|
| 30% All-Parlay Profit Boost | 70% |
| 30% Live Profit Boost | 15% |
| 25% All-Purpose Profit Boost | 10% |
| 100% All-Purpose Profit Boost | 5% |
Landing the 100% boost is the rarest—but potentially the most profitable.
Important Betting Rules
A few conditions apply when using your mystery boost:
- Bets must use cash balance or DK Dollars
- Boosts apply only to net winnings, not the stake
- Cashed-out or voided bets cancel the boost
- Tokens are single-use and cannot be combined with other promos
- Maximum bet limits may apply
- All tokens expire once the final college basketball game on March 18 ends.
Who’s Eligible?
To participate in the First Four Mystery Offer, players must:
- Be 21+ (18+ in some jurisdictions such as DC, KY, NH, PR, and WY; 19+ in Ontario)
- Have an active DraftKings Sportsbook account
- Be physically located in an eligible jurisdiction where DraftKings operates
- Receive the promotion and opt in during the promotional period
- Eligibility may vary by state and region.
Don’t stop at just one deal. Browse our full list of top sportsbook promos and limited-time betting offers.
Final Take: DraftKings First Four Mystery Offer
College basketball’s opening games are already unpredictable—but this promotion adds another twist. With the First Four Mystery Offer, bettors can unlock anything from a modest parlay boost to a rare 100% profit multiplier, giving their March wagers a little extra upside.
If you’re planning to bet on the early tournament games anyway, claiming the mystery token is a quick way to potentially boost your winnings before the madness truly begins. 🏀
