Polymarket is dropping a *sweet* $50 sign-up bonus right now, and if you're looking to get in on Monday's Home Run Derby action or Tuesday's All-Star Game, this is your shot. New players who sign up with the promo code STIFFS can snag an extra fifty bucks after just a $20 initial deposit. That's a serious boost to your bankroll for some of the summer's most explosive baseball. You just gotta be 18+ and in an eligible US state, and make sure you lock it in before that first pitch flies in Philadelphia.
Snagging That $50 Bonus Is Easier Than a T-Ball Homer
Seriously, getting this $50 bonus is super straightforward. You just sign up, drop at least twenty bucks into your new Polymarket account, and boom, that $50 sign-up bonus is unlocked. It's for new customers only, obviously, but it's perfect for anyone wanting to place wagers on the Derby or the big AL vs. NL showdown. This offer was last verified on July 13, 2026, so it's fresh, and it's ready to roll for all the upcoming MLB All-Star events at Citizens Bank Park. Don't wait around, because once the Derby starts, this specific offer is gone.The Derby Rules and Sluggers You Need To Watch
Alright, let's talk Derby! The format is the same as the last couple years, 2024 and 2025. Round 1 gives each player 20 swings, with the top four HR totals advancing. Those four then get seeded (No. 1 vs. No. 4, No. 2 vs. No. 3) for the semifinals. Rounds 2 and the Finals tighten up with 15 swings per player. And that "Last Swing" Rule is always wild: if a player goes yard on their final swing, they keep swinging until they miss. No bonus rounds, just pure power. If there's a tie in Round 1, longest home run distance breaks it. Rounds 2 and 3? We get a three-swing swing-off, which is pure drama! Now, the field is stacked, man. We've got Kyle Schwarber (Phillies) leading the probabilities at 22%, but honestly, all eight guys can go off. Junior Caminero (Rays) is at 18%, Munetaka Murakami (White Sox) at 16%, and Jac Caglianone (Royals) at 13%. Then you've got Jordan Walker (Cardinals) at 12%, Ben Rice (Yankees) at 11%, and then *Bryce Harper (Phillies)* at 10%. Harper in his home park with just 10%? That's a surprise, and it could make for some seriously high stakes if he catches fire. Willson Contreras (Red Sox) rounds it out at 6%. This Monday night is gonna be bonkers, pure bombs raining down in Philly! And then Tuesday, we get the All-Star Game itself. If you're gonna get in on the action, make sure you've signed up with that Polymarket promo code STIFFS and grabbed your $50 bonus before the Derby kicks off. It's gonna be a blast, don't miss out!This article was created with AI assistance and reviewed by Seattle On Tap editorial staff. Always verify information with official team sources.