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See the full story · 1 sourcesPolymarket Promo Code TSNEWS Unlocks New $20 Free Bonus for MLB Predictions originally appeared on The Sporting News .
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We have a fantastic opportunity to build our bankroll right out of the gate today. By using the Polymarket promo code TSNEWS during registration here , new customers can lock in an instant $20 bonus just for creating an account on July 28.
There is absolutely nothing better than playing with house money, and this generous welcome offer gives you a risk-free head start to tackle today's Tuesday MLB slate or any other matchups on the diamond this week. Whether you are looking to confidently back a heavy favorite or hunt for a nice pay day on a live underdog, this bonus ensures we are stepping up to the plate with a smart, strategic edge.
Grab $20 Bonus with the Polymarket Promo Code TSNEWS
Polymarket Promo Code TSNEWS New User Offer Instant $20 Bonus Terms and Conditions 18+ and Present in the US Date Last Verified July 28, 2026
Newest Welcome Offer Releases Free Bonus
This Polymarket promo code is exclusively available to new customers. The mechanics of this offer are beautifully simple: once you register and verify your brand-new account, you instantly receive a $20 bonus to jumpstart your betting bankroll. There is no initial deposit required—just ensure you are 18+ and physically located in an eligible Polymarket state, and that $20 is yours to use.
With your bonus secured, we have plenty of great betting angles to attack across today's MLB slate. Take the National League Central clash at Busch Stadium, where the Chicago Cubs (59-46) send David Peterson to the mound to face Matthew Liberatore and the St. Louis Cardinals (53-52).
The trade deadline narrative adds a fascinating layer here for handicapping; the Cubs are actively looking to buy controllable starting pitching, while the Cardinals are navigating an accelerated rebuild and focusing on prospect evaluation. Whether you are backing the highly-motivated Cubs or the prospect-heavy Cardinals, having this instant bonus gives you a real chance at a sweet payout without sweating your own cash.
MLB Probabilities for Monday, July 28th
Matchup Probability CLE @ CIN CLE 40.1% / CIN 59.9% ATL @ NYM ATL 51.9% / NYM 48.1% NYY @ CHW NYY 56.8% / CHW 43.2% CHC @ STL CHC 52.2% / STL 47.8%
If we take our $20 bonus and place a trade on today's heaviest moneyline favorite, the Cincinnati Reds, we would net $11.98 in pure profit. Conversely, if you love hunting for value, backing the heaviest underdog on the board—the Cleveland Guardians—with that same $20 yields a robust $27.80 return.
When I'm handicapping the Guardians-Reds matchup, we see a classic clash of styles. Cincinnati relies on power, boasting 137 home runs and a .705 OPS, but their pitching staff struggles with a 4.524 ERA and a 1.421 WHIP. Meanwhile, Cleveland leans on a stellar pitching staff featuring a 3.747 ERA and a 1.267 WHIP to silence opposing bats.
We can also look at the American League tilt where the Yankees (-145) visit the White Sox. New York enters the week as aggressive trade deadline buyers seeking bullpen and catcher upgrades, but their current roster is already potent with 151 home runs, a .731 OPS, and a stifling 3.406 team ERA. Chicago (CHW) offers some offensive resistance with 136 homers, but their 4.104 staff ERA makes stopping the Yankees a tall task.
How to Apply the Polymarket Promo Code
Getting started and claiming your instant bonus is a breeze. Follow these quick steps to ensure we lock in your offer before the first pitch:
Verify Your Identity: Submit the necessary proof of identification to secure and verify your account.
Enter the Promo Code: Make sure to use the Polymarket promo code TSNEWS when registering.
Because this offer requires no initial deposit, simply creating your account and completing these steps instantly activates your $20 bonus.
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