BetMGM Bonus Code COVERS: Get $1,500 Bonus Bets for Celtics vs. Mavericks, Tuesday NBA Matchups

Use BetMGM bonus code COVERS for a $1,500 First Bet on Celtics vs Mavericks Tuesday. Get bonus bets back if your first wager loses.

Luc LeBlanc - Betting Editor at Covers.com
Luc LeBlanc • Content Editor
Feb 3, 2026 • 17:15 ET • 3 min read

The BetMGM bonus code COVERS unlocks a $1,500 First Bet for Tuesday's Celtics vs. Mavericks showdown. New users can claim this welcome offer and place their first wager on this exciting NBA matchup. With this promotion available through Feb. 3, bettors can take advantage of one of the top sportsbook promos in the market.

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$1,500 First Bets
COVERS

BetMGM Bonus Code Delivers $1,500 Protection for Celtics vs Mavericks

The BetMGM bonus code COVERS provides new customers with substantial protection on their first sports bet. This offer returns your stake as bonus bets if your initial wager loses, up to a maximum of $1,500. The promotion applies to any sports market, making it perfect for betting on the Celtics vs. Mavericks game.

Boston enters this contest as heavy favorites despite Dallas rookie Cooper Flagg's recent hot streak. The Celtics' 31-18 record positions them third in the Eastern Conference, while the Mavericks sit 11th in the West at 19-30. If you bet $100 on Boston to cover the spread and they fail to do so, you'll receive $100 in bonus bets to use on future wagers.

Key terms for this promotion include:

  • Minimum $10 deposit required to activate the offer
  • Bonus bets expire seven days after issuance
  • Wagers over $50 receive five separate bonus bets worth 20% each
  • Available in eligible states including AZ, CO, IL, IN, IA, KS, KY, LA, MD, MA, MI, MO, MS, NC, NV, NJ, NY, OH, PA, TN, VA, WV, WY, DC, and PR

For example, if you place a $500 bet on Dallas to upset Boston and the Mavericks lose, you'll receive five $100 bonus bets totaling your original stake. These bonus credits give you additional opportunities to profit from NBA action throughout the week.


Check if you can use our BetMGM bonus code in your state

BetMGM Bonus Code Eligible States
 COVERS AZ, CO, IA, IL, IN, KS, KY, LA, MD, MA, MI, MO, MS, NC, NV, NJ, NY, OH, PA, TN, VA, WV, WY (+ DC, PR)

BetMGM All Users

BetMGM odds for Celtics vs Mavs


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How to Claim Your Celtics vs Mavericks First Bet

Follow these simple steps to secure your welcome bonus for Tuesday's NBA action:

  1. Register a new BetMGM account using bonus code COVERS
  2. Make an initial deposit of at least $10
  3. Place your first real money wager on Celtics vs. Mavericks or any available market
  4. Receive bonus bets equal to your stake if your first bet loses
  5. Use your bonus bets within seven days of receiving them

Ready to get started? Read our comprehensive BetMGM bonus review for additional insights into this sportsbook's features and betting options.


More BetMGM Sportsbook promos, bonuses, and offers

  • Get A Second Chance On First TD Bets: Get your Stake back if your First TD Scorer pick scores the second TD instead!
  • Welcome to MGM Rewards: Earn MGM Rewards Points and redeem them for hotel stays, dining, entertainment, and more.

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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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