Sports Gambling

Underdog Promo Code BROAD: Claim $75 Bonus for NBA, NCAAB Matchups Tonight

By Matt Modi

Published: Mar 12th, 2026 · 3:00 PM EDT

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All new DFS users can redeem the Underdog promo code BROAD to receive a fantasy bonus to use on the NBA and college basketball slate of games tonigh. Create a new account to receive a play $5, get $75 in fantasy entries welcome offer thanks to Underdog, and start diving into Spurs-Nuggets, Celtics-Thunder, and any other game tonight.

Create a $5 entry after signing up and, win or lose, you receive $75 fantasy entries. As far as how to play on Underdog, there are two ways to enter a contest. A standard entry of 2+ picks will result in the largest payout, but all legs must hit. The other option is a flex entry of 3+ picks where the payout is lower but you can still receive some money back with a partial hit.

Underdog Promo Code BROAD for $75 Fantasy Bonus

Underdog Promo Code	BROAD
New Underdog User Offer	Play $5, Get $75 Bonus Entries
Terms and Conditions	New players only, 18+, must be a resident of legal state. 21+ in AZ, MA and VA. 19+ in AL and NE.
Date Last Verified	March 12th, 2026

Unlocking this Underdog welcome offer is a completely straightforward process. Simply sign up for a new account, enter the promo code, and play $5 on your first entry. Once submitted, you instantly get $75 in bonus entries credited directly to your account, giving you the flexibility to build slips with incredible value.

It goes without saying, but this exclusive offer is strictly for new Underdog customers who meet the standard age requirements and are located in a participating state. Once activated, those $75 in extra entries are fully yours to utilize on tonight’s highly anticipated clash between the Boston Celtics and Oklahoma City Thunder, or any upcoming NBA regular season action.

NBA Player Prop Preview Thursday Night via Underdog

Targeting player point totals is a smart way to find value when putting your promo to work. Here are five premier players with the highest consensus points lines for tonight’s slate:

• Shai Gilgeous-Alexander (Oklahoma City Thunder) vs. Boston Celtics: 31.5
• Nikola Jokić (Denver Nuggets) vs. San Antonio Spurs: 28.5
• Jaylen Brown (Boston Celtics) vs. Oklahoma City Thunder: 23.5
• Jamal Murray (Denver Nuggets) vs. San Antonio Spurs: Higher 23.5
• Victor Wembanyama (San Antonio Spurs) vs. Denver Nuggets: 23.5

We put a lot of stock into situational context, and tonight’s board is loaded with narratives that directly impact player projections. Shai Gilgeous-Alexander highlights the slate at 31.5 points. Not only is he averaging 31.7 points per game, but he is chasing history—having just tied Wilt Chamberlain’s all-time record of 126 straight 20-plus point games. He draws a tough Boston defense allowing just 107.2 points per contest, but his motivation is unquestionable.

For Boston, Jaylen Brown sits at a 23.5-point line. While his season average is a stellar 28.3, he has cooled to 18.8 over his last four outings, which also coincides with Tatum’s return the last two games. With Tatum, and Derrick White listed as questionable for tonight, monitoring the injury report will be important.

Looking at the Spurs and Nuggets matchup, we have a premier big-man battle. Nikola Jokić matches his 28.5 line almost perfectly with his 28.6 season average. Meanwhile, Victor Wembanyama is surging in the MVP race, averaging 28.6 points over his last five games to eclipse his 24.2 season average. Keep a close eye on his status, as he is currently listed as questionable with right ankle soreness. If he suits up, going higher against a Denver defense giving up 116.3 points per game presents tremendous value. Finally, Jamal Murray brings a hot hand with a 23.5 line, boasting 27.2 points over his last five games.

How to Redeem the Underdog Promo Code BROAD

Getting started and claiming your welcome bonus is an easy process. Follow these simple steps to activate your $75 in bonus entries before the Oklahoma City Thunder and Boston Celtics tip off tonight at 9:30 PM ET:

• Register an Account: Create a new account by providing your standard personal information. You must be a new user and meet the specific age and region requirements to be eligible.
• Enter the Promo Code: During the sign-up process, it is required that you input the promo code BROAD to lock in your welcome offer.
• Make a Deposit: Fund your account by depositing at least $5 using one of the available secure methods.
• Play Your First Entry: Finally, play a $5 entry to officially activate your account and instantly receive your $75 in bonus entries.

Once your account is registered and your welcome bonus is activated, you can start putting together your picks for tonight’s slate. When building your slips, Underdog gives you two primary ways to play:

• Standard Entry: A standard slip requires 2+ picks. This format will trigger the largest potential payout, but keep in mind that all legs must hit for your entry to win.
• Flex Entry: If you prefer a bit of a safety net, you can choose to flex an entry that contains 3+ picks. With a flexed slip, you can still receive some winnings even if one leg is incorrect, which is an excellent strategy for mitigating risk while building a longshot slip.