RESOLVING THE LEDGER
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See the full story · 2 sourcesPolymarket Promo Code TSN: Get $20 Sign Up Bonus for MLB Predictions Saturday originally appeared on The Sporting News .
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If you're tired of sitting on the sidelines and want to dive into today's baseball action with some extra house money, you're in the exact right place. New customers can use the Polymarket promo code TSN to score a $20 sign-up bonus after signing up here and making an initial trade of just $10.
It is a fantastic way to stretch your bankroll, whether you are eyeing today's heavy-hitting matchups—like the surging Atlanta Braves taking on the New York Yankees—or planning out your handicapping strategy for any other MLB game this weekend. We're in this together, so let's break down exactly how you can claim this welcome offer and build a real chance at a nice pay day.
Polymarket Promo Code TSN Releases $20 Bonus
Polymarket Promo Code TSN New User Offer $20 Bonus Terms and Conditions 18+ and Present in the US Date Last Verified August 8, 2026
Getting your hands on this bonus is as easy as reading the morning line. As a new Polymarket customer, you will unlock a $20 sign-up bonus simply by creating your account and placing an initial trade of at least $10. Once your qualifying trade is locked in, those bonus funds are yours to play with across today's exciting MLB slate.
Personally, there's nothing better than using house money to chase a slightly bigger payout on competitive games. Whether you want to back the top-tier Milwaukee Brewers and their elite pitching staff against a Minnesota Twins team fighting for a Wild Card spot, or look for value elsewhere on the board, this promotion gives you the flexibility to do it.
Just remember, to get in on the action, you need to be a new user, 18 years or older, and physically located in an eligible state. Meet those basic requirements, make your first $10 trade, and you will be ready to step to the plate tonight.
MLB Probabilities Today
Matchup Moneyline Probability ATL @ NYY ATL -134 / NYY +112 ATL 54.8% / NYY 45.2% TOR @ PHI TOR +132 / PHI -158 TOR 41.3% / PHI 58.7% NYM @ PIT NYM +118 / PIT -141 NYM 43.9% / PIT 56.1% CHC @ KC CHC -168 / KC +140 CHC 60.1% / KC 39.9% MIN @ MIL MIN +127 / MIL -152 MIN 42.2% / MIL 57.8%
If we look at the board, placing your qualifying $10 trade on the heaviest favorite—the Chicago Cubs at -168—would net you a $5.95 profit for a total payout of $15.95. On the flip side, backing a live underdog like the Kansas City Royals at +140 would return a solid $14.00 profit, giving you a total of $24.00 on that same $10 wager.
When I'm handicapping the CHC @ KC matchup, the numbers back up the Cubs' short moneyline. Chicago is sitting pretty as the top NL Wild Card team, recently bolstered by adding Kevin Gausman at the deadline. They bring a serious .753 team OPS to the yard, noticeably outperforming a rebuilding Royals squad sitting at .708. The Cubs also hold the edge on the mound with a 4.05 ERA against Kansas City's 4.81 ERA.
Meanwhile, the TOR @ PHI clash offers another great angle. The favored Phillies (-158) have won five of their last six, energized by deadline pickup Luis Arraez. They lean on a lineup that outpaces Toronto in team OPS (.709 to .678). However, the Blue Jays counter with a scrappy pitching staff holding a 4.04 ERA compared to Philadelphia's 4.19 ERA.
Ready to build your bankroll? Getting started and claiming your offer ahead of today's MLB action is a quick and straightforward process. To activate your welcome bonus, just follow these simple steps:
Register: Create and register a new account here by entering your standard personal information.
Verify Your Identity: Provide proof of identification to ensure your account is secure and verified.
Apply the Code: When prompted during registration, enter the Polymarket promo code TSN .
Fund Your Account: Make a first-time trade of at least $10 in order to activate the offer.
Once your deposit clears and your account is ready, you can start placing your wagers on any of the games on today's slate with total confidence.
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