Sunday Night Baseball doesn't get much better than this — the Yankees visiting Citizens Bank Park for a series finale against the Phillies at 7:20 p.m. ET on NBC and Peacock, with a confirmed pitching matchup that gives the market real structure heading into first pitch. TheKalshi promo code MLB ACTION offer is the sharpest way to trade it. Sign up today, enter Kalshi promo code MLB ACTION, complete $25 in qualifying trades, and unlock up to $500 in bonus trading funds. Action Network verifies this code ahead of every event, so lock it in before Ryan Weathers and Cristopher Sánchez take the mound tonight.
Action Network partners directly with Kalshi to surface this offer, so trust that the Kalshi promo code ACTION is live and the terms are current. We verify the bonus amount, the qualifying threshold, and the eligibility rules before every event — and we did the same ahead of tonight's MLB series finale. Unlike most prediction markets available for Sunday's card, including Yankees vs. Phillies, Kalshi's $500 ceiling makes it the highest-value new-user offer in the space right now.
What Is the Kalshi Promo Code MLB Offer?
The Action Network Kalshi promo code MLB offer lets you enter code ACTION at sign-up to unlock up to $500 in bonus trading funds. Action Network confirms the active code before every matchup, so you always know exactly what you're claiming. Here's what the offer delivers:
- The code: When prompted for a Kalshi promo code, enter ACTION.
- The offer: Trade $25 on any market and collect up to $500 in bonus trading value.
- The requirement: $25 in cumulative qualifying trades triggers the reward — split across multiple positions or clear it in one.
- The payout: Kalshi credits your bonus right after the qualifying trades settle.
- The eligibility: New Kalshi users must be 18+ and located in an eligible state to register.
How to Redeem the Kalshi Promo Code MLB Deal
Claiming one of the best prediction market promos with the Kalshi referral code ACTION takes just a few minutes. Follow the Action Network-verified steps below:
- Tap the Kalshi promo code ACTION link on this page to download the mobile app on iOS or Android.
- Enter your personal details to create your new prediction market account.
- When asked for a code, the Kalshi promo code MLB traders should enter is ACTION.
- Complete Kalshi's quick identity verification to finish registering.
- Deposit funds with a debit card, Apple Pay, or another available method.
- Complete $25 in qualifying trades on Yankees vs. Phillies or any available market.
- Unlock your bonus trading value immediately.
Tip: Use the prediction market odds calculator to preview your potential returns on Yankees vs. Phillies trades before placing a position tonight.
Why Use Kalshi to Trade MLB?
Signing up with the Kalshi promo code ACTION turns a Sunday night at Citizens Bank Park into a live, hands-on market. Buy and sell contracts against other traders on a CFTC-regulated exchange rather than going up against a house edge — that peer-to-peer structure is what separates Kalshi from conventional sports betting and keeps every half-inning in play. Prices update in real time as the game breathes: a bases-loaded at-bat, a bullpen call, a leadoff walk with the go-ahead run at third. That's the Kalshi engine at work.
Take a position on the moneyline, trade the run total, or enter a specific in-game outcome market, then adjust as the innings unfold. Kalshi also operates in plenty of states where traditional sportsbooks go dark, which is a big part of why the Kalshi promo code ACTION keeps pulling in new MLB traders. It ranks among the best prediction market apps available today, and code ACTION gets you through the door with one of the most valuable new-user offers in the space. For users who also want a fixed-odds sportsbook account alongside Kalshi, the MLB betting promos page covers the top welcome deals available for Sunday's card.
Yankees vs. Phillies Preview: Sunday at Citizens Bank Park
First pitch is set for 7:20 p.m. ET on NBC and Peacock from Philadelphia. Tonight's series finale features one of the more compelling pitching mismatches on the Sunday slate. Cristopher Sánchez (11-4, 2.62 ERA) — the 2026 MLB All-Star Game starter — takes the ball for the Phillies against Ryan Weathers (3-7, 4.40 ERA) for New York. Sánchez has been one of the most consistent arms in the NL all season, and his contact-suppression profile sets up well at Citizens Bank Park — a run-friendly environment — against a Yankees club that has been inconsistent on the road across the second half. Check the latest MLB odds as lineups are confirmed before 7:20 p.m. ET, and expect Kalshi contract prices to reflect the pitching gap clearly once the full pre-game picture is set.
The Phillies enter as the home favorite with the market's implied probability squarely behind Philadelphia — Sánchez's track record against American League lineups and the home-field edge at Citizens Bank Park give the Phillies the structural lean heading into first pitch. That said, the Yankees carry genuine offensive depth and are live at the right number.
Confirm live market pricing right after you redeem the Kalshi promo code MLB offer before placing a trade on either of these lineups tonight.
Verify full schedule and game times at MLB.com before trading. Must be 18 years or older and have a legal U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, or OH. Please play responsibly.
