Underdog Promo Code COVERS: Get $50 Bonus Entries for Red Sox vs. Cardinals

Luc LeBlanc - Betting Editor at Covers.com
Luc LeBlanc • Content Editor 3+ years betting experience
Updated: Apr 11, 2026 , 04:30 PM ET • 3 min read

Use Underdog promo code COVERS for $50 in bonus entries on Red Sox vs Cardinals. Claim your fantasy sports bonus today.

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

The Underdog promo code COVERS offers new users $50 in bonus entries when they place their first $5 entry, perfect timing for Saturday's Red Sox vs. Cardinals matchup. Kyle Leahy takes the mound for St. Louis as they look to extend their season-high three-game winning streak against Boston, making this an ideal game to explore one of the best prediction market apps available. This welcome offer remains active as of April 11, giving fantasy sports fans an excellent opportunity to get started with enhanced value.

Play $5, Get $50
Code: COVERS

Underdog promo code COVERS delivers $50 bonus for Red Sox vs Cardinals

The Underdog promo code COVERS provides new users with $50 in fantasy bonus entries after placing an initial $5 entry. This welcome bonus automatically appears in your account within 72 hours and comes with a 1x wagering requirement that must be completed within 14 days. The bonus entries expire after 60 days if unused, and account verification is required before withdrawing any winnings.

For Saturday's Red Sox vs. Cardinals game, you could create a fantasy lineup featuring players like Jordan Walker, who has hits in six straight games, or Wilyer Abreu, who leads Boston with seven multi-hit performances. If your $5 entry wins, you keep all winnings plus gain access to your $50 bonus. If your initial entry doesn't win, you still receive the full $50 bonus to use on future contests, including upcoming games in this series.

Key terms include:

  • Must be 18+ and located in eligible states (not available in NJ, NY, MD, OH, MI, PA)
  • Bonus has 1x wagering requirement within 14 days
  • Account verification required for withdrawals
  • 60-day expiration on bonus entries

This offer stands out among best prediction market promos for its straightforward structure and substantial bonus value.


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 Underdog fantasy bonus

Follow these steps to claim your $50 bonus for the Red Sox vs. Cardinals game:

  1. Visit Underdog Fantasy and create your new account
  2. Enter promo code COVERS during registration
  3. Verify your account with required documentation
  4. Make your first $5 fantasy entry on any available contest
  5. Receive $50 in bonus entries within 72 hours automatically
  6. Use bonus entries on future contests within 60 days

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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