Underdog Promo Code COVERS: $50 Bonus Entries for Mariners vs. Padres, MLB Games on Thursday (Apr. 16)

Luc LeBlanc - Betting Editor at Covers.com
Luc LeBlanc • Content Editor 3+ years betting experience
Updated: Apr 16, 2026 , 05:30 PM ET • 3 min read

Use Underdog promo code COVERS for $50 in bonus entries on Mariners vs Padres. Claim your fantasy sports bonus today with just $5.

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

The Seattle Mariners visit the San Diego Padres on Thursday, April 16, in what promises to be an exciting matchup after the Padres' dramatic five-run ninth-inning comeback Wednesday night. New users can capitalize on this thrilling series with the Underdog promo code COVERS, which unlocks $50 in bonus entries when you place your first $5 entry.

This welcome offer is perfect for making predictions on tonight's game, and Underdog ranks among the best prediction market apps available today.

Play $5, Get $50
Code: COVERS

Underdog Promo Code Details for Mariners vs Padres

The Underdog promo code COVERS delivers exceptional value for fantasy sports enthusiasts looking to make predictions on tonight's Mariners-Padres showdown. After placing your initial $5 entry on any contest, you'll automatically receive $50 in fantasy bonus entries within 72 hours. This 10-to-1 bonus ratio makes it an attractive option for both newcomers and experienced players.

The bonus entries come with straightforward terms: you must fulfill a 1x wagering requirement within 14 days of receiving your bonus, and the bonus expires after 60 days if unused. For tonight's game, you could use your bonus entries to predict player performances like Jackson Merrill's hitting streak or Luis Castillo's strikeout totals. If your predictions hit, you keep all winnings, while unsuccessful entries simply use your bonus credits without affecting your initial deposit.

Key terms include age requirements of 18+ in most states (19+ in Alabama and Nebraska, 21+ in Arizona, Massachusetts and Virginia), and the offer is not available in New Jersey, New York, Maryland, Ohio, Michigan and Pennsylvania. Account verification is required before withdrawing any winnings.

For those interested in comparing options, check out the best prediction market promos currently available.


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 bonus for tonight's Mariners vs Padres game is straightforward. Follow these steps to secure your $50 in bonus entries using promo code COVERS:

  1. Download the Underdog Fantasy app or visit their website
  2. Create your new account and enter promo code COVERS during registration
  3. Verify your account with required identification documents
  4. Make your first deposit of at least $5
  5. Place your initial $5 entry on any available contest, including tonight's Mariners-Padres matchup
  6. Receive your $50 in bonus entries within 72 hours automatically

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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