Underdog Promo Code COVERS: Get $50 New User Bonus for Celtics-Heat, NBA Games on Wednesday (Apr. 1)

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

Apr. 1, 2026 at 9:30pm

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The Underdog promo code COVERS offers new users $50 in bonus entries when they place their first $5 entry, making it perfect timing for Wednesday's Celtics vs. Heat matchup. Jaylen Brown will be looking to bounce back from his self-described "worst game of the season" when Boston visits Miami on April 1.

Why it matters

This welcome offer from one of the best prediction market apps gives fantasy sports fans extra value for building lineups around key players like Brown, who averages 28.6 points per game despite his recent struggles.

The details

The Underdog promo code COVERS unlocks a generous welcome bonus that transforms a modest $5 entry into $50 worth of fantasy bonus entries. This promotion works by requiring new users to make their first entry of at least $5 on any available contest, after which Underdog automatically credits their account with $50 in bonus entries within 72 hours. The bonus carries a 1x wagering requirement that must be completed within 14 days, and users have 60 days to utilize their bonus entries before expiration.

  • The Celtics vs. Heat game is on Wednesday, April 1, 2026.

The players

Jaylen Brown

A Boston Celtics player who averages 28.6 points per game despite recent struggles.

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What they’re saying

“worst game of the season”

— Jaylen Brown

The takeaway

Fantasy sports enthusiasts can explore various best prediction market promos to maximize their playing opportunities across different platforms.