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Polymarket promo code SPORTSLINE: Get $20 bonus for Phillies-Yankees, Rangers-Mariners in MLB on Friday

New Polymarket users can get a $20 bonus on Friday when they deposit $10 and trade on the day's sports action

ByPublished: Jul 24, 2026 8:54PM UTC . 4 min read
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With a full 15-game slate in baseball today, it's a great time to take advantage of the Polymarket promo code SPORTSLINE, which gives new users a $20 bonus when they deposit $10 to make trades. The Yankees and Phillies headline tonight's action and have their minds set on claiming the top spot in their respective divisions. Meanwhile, the Rangers and Mariners meet in an American League West matchup where Texas has a slim lead over Seattle in the standings. Click here to get started and claim your $20 bonus after depositing $10 with the Polymarket promo code SPORTSLINE:

For the terms and conditions of this offer, be sure to check out the Polymarket promo code review page.

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: 

Friday MLB trading preview

The Yankees visit the Phillies tonight and even though New York is still playing without Aaron Judge due to injury, this matchup will still feature plenty of star power with players like Cody Bellinger and Bryce Harper. The Phillies are trading at $0.56 per share to win, and the Yankees are at $0.44. Users can also trade on a first-inning run, which is priced at $0.44 per share.

In a key American League matchup, the Mariners and Rangers are battling in a four-game series tonight to claim the top spot in the Central division. Seattle is looking to rebound after losing its home series to Cincinnati while Texas is trying to play consistent baseball. The Mariners are priced at $0.52 per share to win tonight on Polymarket and the Rangers are at $0.48. Ahead of the trade deadline, both teams are looking for a little extra on offense to make up for significant injuries that include Corey Seager and Julio Rodriguez. 

The Guardians and Rays open a three-game series tonight where Jose Ramirez returns to Cleveland's lineup. This match features two ace pitchers that are Joey Cantillo and Shane McClanahan. Tampa Bay has been very strong at home this season posting a 35-15 record so far and it has a slim lead in the AL East. Cleveland is also trying to chase down the White Sox in the AL Central. The Rays are trading at $0.55 against the Guardians at $0.45 on Polymarket. Trade on the MLB 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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Janine Brown
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