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If you are looking for a nice pay day to start the second half of the MLB season, new customers can take advantage of an exclusive welcome offer by simply applying the Polymarket promo code TSNEWS during registration. Once you create your account here and make an initial deposit of at least $20, you will automatically receive a $50 sign-up bonus to kickstart your handicapping.
This bonus credit can be seamlessly used to back your favorite matchups today, as well as any other MLB game on the schedule throughout the rest of this weekend.
Score $50 Bonus with the Polymarket Promo Code TSNEWS
| New User Offer | $50 Bonus |
| Terms and Conditions | 18+ and Present in the US |
| Date Last Verified | July 17, 2026 |
I am always looking for a real chance to stretch a bankroll, and this welcome offer hits the sweet spot for anybody wanting to build a winning strategy. New Polymarket customers can claim an exciting $50 sign-up bonus to use on today's packed MLB schedule.
Whether you are eyeing a National League clash like the St. Louis Cardinals taking on the Arizona Diamondbacks (STL @ ARI) or staying up for the late-night action with the Detroit Tigers and Los Angeles Angels (DET @ LAA), this bonus provides a fantastic head start.
To lock in this promotion, simply create your account and make a first-time deposit of at least $20, which instantly unlocks your $50 bonus. Just remember, this promotional offer is strictly reserved for new Polymarket customers who are 18 years of age or older and physically present in an eligible state where the platform operates.
MLB Probabilities on Friday
I'm looking at the key underlying metrics for a couple of today's premier matchups so we can spot our trading edges.
MIA @ MIL
The Milwaukee Brewers (59-37) host the Miami Marlins (52-45) in a classic clash of strong pitching versus capable hitting. The Brewers feature a stellar 3.48 team ERA and an impressive 9.73 K/9, anchored by a robust pitching staff that knows how to suppress opposing offenses. They will need that heat to cool down a Marlins lineup sporting a .741 OPS. On the flip side, the Brewers' offense (.735 OPS) gets a crack at a Miami pitching staff carrying a 4.01 team ERA.
MIN @ CHC
The Chicago Cubs (54-42) welcome the Minnesota Twins (48-49) to Wrigley Field. Looking at the season totals, the Cubs hold the statistical high ground on both sides of the ball. Chicago's lineup boasts a .747 team OPS compared to Minnesota's .738 OPS. On the mound, the Cubs possess a 4.33 team ERA, which edges out the Twins' 4.62 ERA. I'll be keying in on Chicago's staff to exploit a Twins team that swings and misses frequently, having fanned 4,034 times on the year.
Keeping a close eye on these metrics prepares us to strike with confidence and pinpoint the best value once the percentages are released to the public.
Steps for Using the Polymarket Promo Code
Getting started and claiming your sign-up bonus is a straightforward process. We are in this together, so follow these simple steps to ensure you are ready to wager on tonight's MLB action and start chasing those bigger payouts:
- Register: Create your new account here by entering your standard personal information.
- Verify Identity: Provide the required proof of identification to secure and verify your account.
- Enter the Code: When prompted during the registration process, be sure to enter the Polymarket promo code TSNEWS.
- Deposit Funds: Make a first-time deposit of at least $20 in order to officially activate the offer.
Once you complete these steps, your promotional offer is activated, and you are fully set to dive into tonight's baseball prediction markets.

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