Underdog Promo Code COVERS: Play $5, Get $50 Bonus for March Madness Saturday Night Games

Luc LeBlanc - Betting Editor at Covers.com
Luc LeBlanc • Content Editor 3+ years betting experience
Updated: Mar 21, 2026 , 05:30 PM ET • 3 min read

Use Underdog promo code COVERS for $50 in bonus entries on March Madness Saturday late games. Claim your fantasy sports bonus today.

Photo By - Use Underdog promo code COVERS to play $5, Get $50.

March Madness Saturday's late games feature four thrilling second-round matchups that showcase the tournament's unpredictable nature. New users can capitalize on these exciting contests with the Underdog promo code COVERS, which unlocks $50 in bonus entries for fantasy sports contests. This welcome offer is available through Saturday, March 21, making it perfect timing for the day's marquee games featuring Texas vs. Gonzaga, VCU vs. Illinois, Vanderbilt vs. Nebraska, and High Point vs. Arkansas.

Fantasy sports enthusiasts can explore these games and others through the best prediction market apps available today.

Play $5, Get $50
Code: COVERS

Underdog Promo Code Details for March Madness

The Underdog promo code COVERS provides new users with $50 in fantasy bonus entries after placing an initial $5 entry. This offer applies to all eligible fantasy contests, including those featuring Saturday's late March Madness games where upsets and Cinderella stories continue to unfold. For example, if you create a fantasy lineup featuring players from the Texas vs. Gonzaga game and your entry wins, you'll receive your winnings plus have additional bonus entries to use on future contests.

The bonus entries come with specific terms that users should understand. You must be at least 18 years old (19+ in Alabama and Nebraska, 21+ in Arizona, Massachusetts, and Virginia) and located in a state where Underdog Fantasy operates legally. The $50 in bonus entries will appear in your account within 72 hours of your qualifying entry. These bonus entries carry a 1x wagering requirement that must be completed within 14 days, and you have 60 days to use the bonus before it expires. Account verification is required before withdrawing any winnings or bonus funds. This offer is not available in New Jersey, New York, Maryland, Ohio, Michigan, and Pennsylvania.

Compare this promotion with other best prediction market promos to find the right fit for your fantasy sports strategy.

Saturday, March 21 - Key NCAA Matchups

  • (11) Texas vs. (3) Gonzaga - 7:10 PM ET (TBS)
  • (11) VCU vs. (3) Illinois - 7:50 PM ET (CBS)
  • (5) Vanderbilt vs. (4) Nebraska - 8:45 PM ET (TNT)
  • (12) High Point vs. (4) Arkansas - 9:45 PM ET (TBS)

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 $50 Underdog Bonus

Claiming your Underdog Fantasy bonus for March Madness is straightforward and takes just a few minutes. Follow these steps to secure your $50 in bonus entries using promo code COVERS:

  1. Visit Underdog Fantasy through the promotional link and click "Sign Up"
  2. Create your account by providing required personal information
  3. Enter promo code COVERS during the registration process
  4. Make your first deposit of at least $5
  5. Place your initial $5 entry on any eligible fantasy contest
  6. Receive your $50 in bonus entries within 72 hours
  7. Complete account verification to enable withdrawals

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.

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