Underdog Promo Code COVERS: Play $5 Get $75 Bonus Entries for Celtics vs. Mavericks

Use Underdog promo code COVERS for $75 bonus on Celtics vs Mavericks Tuesday. New users get bonus credit with $5 entry.

Luc LeBlanc - Betting Editor at Covers.com
Luc LeBlanc • Content Editor
Feb 3, 2026 • 17:30 ET • 3 min read
Photo By - Use Underdog promo code "COVERS" to play $5, Get $75.

The Underdog promo code COVERS delivers a substantial welcome bonus for Tuesday's Celtics vs. Mavericks matchup. New users can secure a $75 bonus by making their first $5 entry on Feb. 3. Boston enters this contest at 31-18 and third in the Eastern Conference, while Dallas sits at 19-30 in the Western Conference, making this an intriguing matchup for predictions on one of the best prediction market apps.

Play $5, Get $75
Code: COVERS

Underdog Promo Code COVERS Nets $75 Bonus for Celtics vs Mavericks

The Underdog promo code COVERS unlocks a generous $75 bonus for new users who place their first $5 entry. This welcome offer applies to all available contests, including pick'em games where you predict whether players will exceed or fall short of their statistical projections for the Celtics-Mavericks game. The bonus arrives in your account within 72 hours of your qualifying entry.

For Tuesday's matchup, you could predict whether Jayson Tatum will score over or under his projected points total, or whether Luka Doncic will record more or fewer assists than his projection. If your $5 entry wins on a Tatum over points pick, you collect your winnings plus receive the $75 bonus. If your prediction misses, you still receive the full $75 bonus credit, giving you additional opportunities to build winning lineups.

Key terms include a 1x wagering requirement that must be completed within 14 days, and the bonus expires after 60 days if unused. Account verification is required before withdrawing any winnings or bonus funds. This offer excludes residents of Maryland, Michigan, Pennsylvania and Ohio.


Use the correct Underdog promo code for your state

Underdog Promo Code Eligible States
 COVERS AK, AL, AR, AZ, CA, CO, FL, GA, IL, IN, KS, KY, MA, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY

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How to Claim Your $75 Celtics vs Mavericks Bonus

Claiming your Underdog bonus for Tuesday's Celtics-Mavericks game requires these simple steps:

  1. Download the Underdog app and complete registration with your personal information and mobile number. 
  2. Verify your account using the PIN sent to your phone.
  3. Make your first deposit of at least $5 and enter promo code COVERS when prompted.
  4. Place a $5 entry on any available contest, including pick'em predictions for the Celtics-Mavericks matchup.
  5. Receive your $75 bonus within 72 hours and start building additional entries for upcoming games.

Affiliate Disclosure: Our team of experts has thoroughly researched and handpicked each product that appears on our website. We may receive compensation if you sign up through our links.

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Luc LeBlanc
Content Editor

Luc has been passionate about sports since he was a child, playing competitive hockey and staying closely tuned to professional leagues. Today, he brings that same energy to his work as a Content Editor, covering NHL games, player props, and betting trends with a sharp, analytical eye.

Since 2023, Luc has been writing picks and analysis for various publications, helping readers discover value in several major sports. While hockey is his specialty, he also closely follows tennis, keeping up with both the ATP and WTA Tours.

A graduate of Saint Mary’s University (BSc, Geography, 2025), Luc approaches sports betting the way he approaches maps and statistics by looking for patterns, trends, and angles that give him an edge. He focuses on research-backed and well-informed picks, spotting correlations, and finding the best opportunities in player props and game markets.

When he’s not making data-driven betting decisions or breaking down NHL matchups, you’ll find Luc on the ice, hitting the tennis courts, or engaging in some other form of exercise — staying connected to the sports he loves.

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