Kalshi Promo Code WSN: Trade $25 and Get $25 on Mariners vs. Red Sox (September 1)

Kalshi Promo Code WSN for Tuesday, September 1, 2026

The table below breaks down the key specifics for the Kalshi promo code WSN offer ahead of the Seattle Mariners vs. Boston Red Sox matchup on Tuesday, September 1, 2026.

Is Kalshi Legal in Your State?

Kalshi is legal in 47 US states and Washington, D.C. It is unavailable in three states: Michigan, Nevada, and Washington, where regulators have challenged its sports event contracts.

Because Kalshi operates as a CFTC-regulated exchange rather than a sportsbook, it lists contracts nationwide by default, and access closes only where a state has forced it out. That regulatory posture is why availability changes faster than it does for state-licensed sportsbooks, so confirm your state before funding an account.

Disclaimer: State availability is subject to ongoing litigation and can change quickly. Verify Kalshi's current status in your state before signing up.

How to Claim the Kalshi Promo Code $25 Bonus

Follow these six simple steps to create your exchange account and claim the promotional incentive using the Kalshi promo code WSN:

1. Navigate to the official Kalshi registration page on the web platform or open the mobile application.

2. Select the sign-up tab and enter your personal identification details, such as full legal name, email address, and residential address.

3. Input the Kalshi promo code WSN in the designated referral field during the registration process.

4. Complete identity verification by providing standard federal regulatory documentation, including the last four digits of your SSN.

5. Deposit at least $20 into your wallet using an approved banking method, such as ACH transfer or wire.

6. Execute $25 in contract trades across any open market, such as the Mariners vs. Red Sox game. Once settled, a $25 promotional credit will be added to your account balance.

Need more info? Read our Kalshi Review to learn more.

Featured Matchup: Mariners vs. Red Sox

The Seattle Mariners visit the Boston Red Sox at Fenway Park for game two of their series on Tuesday, September 1, 2026. Boston took the series opener on August 31 in a 10-inning 9-8 victory, highlighting the offense on both sides.

Boston enters September fighting for position in the competitive AL East playoff picture. Key contributors like Jarren Duran, Roman Anthony, and Trevor Story have provided depth across the batting order. For Seattle, outfielders Julio Rodríguez and Randy Arozarena, alongside catcher Cal Raleigh, continue to lead the run production.

Trading volume on Kalshi event contracts reflects a closely matched contest. Share prices fluctuate dynamically based on real-time order flow and pitching announcements leading up to first pitch.

Today's Markets for Mariners vs. Red Sox (Tuesday, September 1, 2026)

Market prices represent binary event shares priced between $0.01 and $0.99, reflecting the market's perceived percentage probability of an outcome occurring.

Please note: Market prices fluctuate in real time and are subject to change.

Use Kalshi Promo Code WSN and Get $25

How to Watch Mariners vs. Red Sox

• Date: Tuesday, September 1, 2026

• Time: 6:45 PM ET

• Location: Fenway Park, Boston, MA

• TV Broadcast: NESN (Boston region), Mariners.TV (Seattle region)

• Radio Broadcast: WEEI 93.7 FM (Boston), KIRO 710 AM (Seattle)