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Polymarket promo code SPORTSLINE: Get $20 bonus for MLB, WNBA, MLS All-Star Game, PGA Rocket Classic on Wednesday

New Polymarket users can get a $20 bonus on Wednesday after depositing $10 or more to trade

ByPublished: Jul 29, 2026 3:15PM UTC . 3 min read
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Wednesday is another busy day of sports, and fans interested in trading on the day's action with the latest Polymarket promo code SPORTSLINE can get a $20 bonus after depositing $10. Polymarket can look forward to a full day of MLB games from noon on, a pair of WNBA contests and the MLS All-Star Game, as well as the PGA's Rocket Classic teeing off early Thursday morning. Click here to sign up at Polymarket and get your $20 bonus after depositing $10 with the Polymarket promo code SPORTSLINE:  

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.

  1. Click CLAIM BONUS on this page. Download the Polymarket app.
  2. Create an account and provide all the required information, such as name, email and payment details. Use the code SPORTSLINE to get your bonus.
  3. Make a first deposit by your preferred deposit method and follow the prompts.
  4. 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: 

Wednesday trading preview

  • Yankees vs. White Sox more than 7.5 runs scored (50%)
  • Red Sox-A's fewer than 10.5 runs scored (50%)
  • MLS All-Stars to defeat Liga MX All-Stars (47%)

The New York Yankees can secure a series win on Wednesday when they take on the Chicago White Sox. New York won the first two games of the series with Chicago and now sends Cy Young Award candidate Cam Schlittler (10-6, 2.07) to the hill. Chicago counters with Davis Martin (9-5, 3.49). The SportsLine Projection Model, which simulates every game 10,000 times, has more than 7.5 runs being scored in this game in 64.9% of its outcomes.

The Red Sox and Athletics have split the first two games of their four-game set in Sacramento, with Game 3 set for Wednesday night. The home team will give the ball to Jacob Lopez (5-4, 6.12) while Boston starts Patrick Sandoval, who has worked to a 3.21 ERA in his first four starts of the year after returning from injury. The runs scored number for this one is 10.5, and the SportsLine model has fewer than 10.5 runs scored hitting at a 65.4% rate.

The MLS All-Stars take on the Liga MX All-Stars in Wednesday's MLS All-Star Game. While Inter Miami's Lionel Messi will miss the game after going all the way to the World Cup final with Argentina, notable MLS players like LAFC's Son Heung-Min, New York Red Bull's Julian Hall and Vancouver's Thomas Mueller are all on the roster. Trade on Wednesday's MLB, WNBA and MLS games and more with the Polymarket promo code SPORTSLINE:

Responsible Risk Management

Polymarket offers different ways to keep its users safe with risk management tools like trading breaks, a voluntary opt-out feature and funding limits.  

Prediction Markets are regulated by the Commodity Futures Trading Commission (CFTC) - an independent agency of the U.S. federal government.

Event contracts trading involves a risk of substantial loss and is not suitable for all investors. Participation in prediction markets is subject to applicable eligibility requirements. Participation may be restricted or prohibited in certain jurisdictions and participants are responsible for ensuring their participation complies with applicable laws and regulations in their jurisdiction.

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Nick Stellini
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