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Polymarket promo code SPORTSLINE: Get $20 bonus for Yankees-White Sox, Cubs-Cardinals, MLB on Monday
New Polymarket users can get a $20 bonus on Monday after depositing $10 or more to trade
There are 12 games on the MLB schedule for Monday, and those interested in making baseball predictions should check out the latest Polymarket promo code SPORTSLINE to get a $20 bonus after depositing $10 to make trades. The Miami Marlins are trying to snap a 12-game losing streak on Monday, while the White Sox will battle the Yankees in a key AL clash. Two NL Central rivals square off in a series that will impact the wild card race. Click here to get started and claim your $20 bonus after depositing $10 with the Polymarket promo code SPORTSLINE: Â
Visit the Polymarket promo code review page for the terms and conditions of this offer.
How to sign up for the Polymarket referral code SPORTSLINE
You can sign up for this Polymarket offer using the steps listed below. This offer is only available for new users.
- Click CLAIM BONUS on this page. Download the Polymarket app.
- Create an account and provide all the required information, such as name, email and payment details. Use the code SPORTSLINE to get your bonus.
- Make a first deposit by your preferred deposit method and follow the prompts.
- New users must deposit at least $10 in contracts for the $20 trading bonus to be applied to their account.
After depositing $10 with the Polymarket promo code, new users will be given a $20 trading bonus:Â
Monday trading preview
- Phillies-Marlins more than 7.5 runs (51%)
- White Sox to win, or lose by less than 1.5 runs vs. Yankees (56%)
- Cubs-Cardinals fewer than 9.5 runs (50%)
Zack Wheeler (10-2, 2.16 ERA) takes the mound on Monday for the Phillies, who have lost some ground in the NL East but remain a solid wild card contender. The Marlins, who have dropped 12 in a row to go from 10 games above .500 to two games below even, send out Tyler Phillips (2-5, 3.52 ERA). The SportsLine Projection Model has these teams combining for more than 7.5 runs in 65.2% of simulations, and you can make this trade on Polymarket at 51%.
The White Sox have been one of the biggest surprises of the 2026 season, and Chicago will try to prove its status as a contender when it meets Max Fried (4-3, 2.97 ERA) and the Yankees. Fried returned from a two-month absence last week and delivered five scoreless innings, so he's looking to continue that stellar form. The White Sox are rolling with Noah Schultz (3-7, 6.04 ERA) and they keep this game close in 62% of SportsLine simulations. On Polymarket, this trade comes in at 56%.
At one point, every team in the NL Central was above .500. That's no longer the case, and the Cardinals are hoping they can make up ground in the wild card race when they begin a four-game series with the Cubs. Chicago is in a great spot to have the top wild card, but the Cubs are within striking distance of the Brewers for the division. It'll be David Peterson (5-7, 5.97 ERA) going for the visitors while Matthew Liberatore (5-7, 5.18 ERA) takes the bump for St. Louis. Despite the pitchers on display, the SportsLine model sees less than 9.5 runs being scored in 63.3% of simulations. Make this trade on Polymarket for 50%. Trade on Monday's MLB games and more with the Polymarket promo code SPORTSLINE:
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