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Underdog Promo Code BROAD: Get $75 Bonus for 76ers vs. Celtics, NBA Picks
By Alex Payton
Published:
We have a massive Eastern Conference showdown tonight as the Philadelphia 76ers head to TD Garden to take on the Boston Celtics. If you’re looking to get in on the action, the Underdog promo code BROAD is the perfect way to build your bankroll.
New users can simply play $5 to instantly unlock $75 in bonus entries. That is a serious boost we can use right away or later this week.
Underdog Promo Code BROAD for NBA Entries
With the Sixers and Celtics facing off on national television tonight, now is the ideal time for us to take advantage of this signup bonus. The offer is straightforward: new users who register and put down just $5 in entry fees will instantly receive $75 in bonus entries.
Whether we are backing the Celtics at home or hunting for value on 76ers player props, this promotion lowers the barrier to entry for tonight’s big game. Check out the table below for the specific offer details and requirements:
| Underdog Promo Code | BROAD |
|---|---|
| New User Offer | Play $5, Get $75 Bonus Entries |
| Date Last Verified | March 1, 2026 |
Details of the Underdog Promo Code
Here is how we make this welcome bonus work for us. To claim the “Play $5, Get $75” offer, new users simply need to register and submit an initial entry of $5 or more. Once we make that qualifying play—perhaps targeting a specific angle in tonight’s 76ers vs. Celtics matchup —the $75 in bonus entries hits the account instantly. This immediate payout ensures we have extra funds available to engage with the rest of the action.
This offer is exclusively available to new Underdog customers who meet the platform’s eligibility criteria. You must be physically present in a participating state and meet the minimum age requirements (generally 18+, though 19+ or 21+ applies in select jurisdictions) to activate the promo. It’s a low-barrier entry point for fans looking to test their knowledge on the NBA slate without a significant upfront commitment.
How to Use Your Underdog NBA Promo Tonight
For those of us looking to chase a nice pay day on high-scoring potential, tonight’s slate features several superstars with massive expectations. I’m always looking for discrepancies in the lines, and here are the top five points over/under totals I am tracking for tonight’s games:
Luka Dončić vs. Sacramento Kings
- Line: 32.5 Points
Shai Gilgeous-Alexander (Oklahoma City Thunder) vs. Dallas Mavericks
- Line: 30.5 Points
Kawhi Leonard (LA Clippers) vs. New Orleans Pelicans
- Line: 29.5 Points
Jaylen Brown (Boston Celtics) vs. Philadelphia 76ers
- Line: 27.5 Points
Tyrese Maxey (Philadelphia 76ers) vs. Boston Celtics
- Line: 26.5 Points
Matchup Highlights & Strategy
The highest line of the night belongs to Luka Dončić, projected at 32.5 points against the Kings. Luka has been efficient recently, averaging 30.4 points on 45.0% shooting over his last five games. However, we should be careful here; the line is set slightly higher than his recent average, asking him to carry a heavy load against Sacramento’s defense.
In the late window, I’m looking closely at Kawhi Leonard, who faces the New Orleans Pelicans with a line of 29.5 points. Leonard has been scorching hot over his last four outings, averaging exactly 29.5 points per game. He is shooting a highly efficient 51.2% from the field in that span, suggesting the books have calibrated this line strictly to his current form.
Perhaps the most intriguing statistical discrepancy—and a real chance for value—belongs to Tyrese Maxey. While his line is set at 26.5 points against Boston, Maxey has been outperforming that number significantly, averaging 30.8 points per game over his last five contests. With Joel Embiid listed as Out due to an oblique injury, the offensive burden will likely fall squarely on Maxey’s shoulders. If his volume remains high, there is a real opportunity on the over here.
How to Activate the Underdog Promo Code
With the Celtics hosting the Sixers at TD Garden tonight, getting started is simple. Click here and follow these steps to claim the welcome bonus and get in on the action before tip-off:
- Register: Download the Underdog app or visit the website. Create an account using standard personal information (name, email, date of birth) and enter promo code BROAD in the designated field.
- Deposit: Fund your account with at least $5 using one of the available secure payment methods.
- Play: Submit a qualifying entry of $5 or more. Once this play is made, the $75 in bonus entries will be instantly credited to your account.
Understanding Entry Types
When we build our entries for tonight’s game or future matchups, we have two primary options for structuring our picks. It helps to know which strategy fits your style:
- Standard Entry: This format requires selecting 2 or more picks. To win, every single leg of the entry must be correct. While this presents a higher difficulty, it triggers the largest potential payouts. Nothing better than hitting a clean sweep.
- Flex Entry: This option requires 3 or more picks and provides a safety net. If you choose to “flex” your entry, you can still receive some winnings even if one of your legs is incorrect. The payout multiplier is lower than a Standard entry, but it keeps us in the game even if one pick misses the mark.
Note: This offer is valid for new users only who meet applicable age and region requirements.
Kentucky resident and graduate of the University of Louisville, Alex has years of experience in the online gambling industry. He is an avid fan of the New York Yankees, Indianapolis Colts, and his alma mater, Louisville Cardinals.