New users who register with the Kalshi promo code ACTION and complete $25 in qualifying trades unlock up to $500 in bonus trading funds — the highest new-user ceiling across all prediction markets available for Thursday night's late game. The Seattle Mariners (51-52) visit Dodger Stadium to face the Los Angeles Dodgers (65-38) at 10:10 p.m. ET on MLB Network. Roki Sasaki starts for Los Angeles against Bryce Miller for Seattle in a confirmed pitching matchup that gives this market more definition than most same-day games.
The Dodgers at 65-38 are the class of baseball heading into the final day of July, and Sasaki gives Los Angeles a dominant arm at the top of the rotation in a ballpark that has been one of the more pitcher-friendly environments in the NL this season. The Mariners at 51-52 arrive as a meaningful underdog facing one of the toughest assignments on the schedule.
Claim the $500 welcome bonus from the Kalshi promo code ACTION below ahead of Mariners vs. Dodgers now:
Kalshi Promo Code ACTION — Offer Details
- Code:ACTION
- Offer: Trade $25, Get Up to $500 in Bonus Trading Funds
- Qualifying trade: $25 cumulative — one position or split across multiple contracts
- Payout: Bonus posts automatically once threshold is met
- No winning trade required
- Eligibility: New users only, 18+, not available in AZ, IL, MA, MD, MI, MT, NV, or OH
Kalshi is a CFTC-regulated peer-to-peer exchange — no house, no fixed margin. Contract prices run from $0.01 to $0.99 and reflect live crowd-sourced probability. Among all the prediction market promos on tonight's MLB card, the Kalshi promo code ACTION stands alone on maximum bonus value.
Mariners vs. Dodgers — Live Kalshi Contract Prices (10:10 p.m. ET, MLB Network, Dodger Stadium)
| Outcome | Kalshi Price | Implied Probability |
|---|---|---|
| Dodgers Win | $0.64 | 64% |
| Mariners Win | $0.36 | 36% |
| Under 8.5 Runs | $0.55 | 55% |
| Over 8.5 Runs | $0.45 | 45% |
| Dodgers -1.5 Run Line | $0.38 | 38% |
| Mariners +1.5 Run Line | $0.62 | 62% |
Verify prices on Kalshi before trading. Check the latest Kalshi MLB odds as lineups are confirmed.
- Mariners vs. Dodgers prediction for tonight: Dodgers to win at $0.64.
A user purchasing 40 contracts at $0.64 spends approximately $25.60 — clearing the qualifying threshold in one position. A Los Angeles win returns $40, roughly $14.40 in gross profit before fees, alongside the full welcome bonus posted at sign-up. The Under 8.5 at $0.55 is the natural complement — Sasaki's strikeout profile and Dodger Stadium's pitcher-friendly dimensions make the low-scoring outcome the structural lean.
How to Claim the Kalshi Promo Code ACTION
- Tap any Kalshi link on this page or use the Kalshi promo code ACTION link directly.
- Download the Kalshi app on iOS or Android or register on the desktop site.
- Enter ACTION in the referral code field before completing registration.
- Complete the required identity-verification step.
- Fund your account via debit card, Apple Pay, or bank transfer.
- Complete at least $25 in qualifying trades on Mariners vs. Dodgers or any available market.
- Collect your bonus automatically once the threshold is met.
Why Use Kalshi on Mariners vs. Dodgers
Among all the prediction market apps available, Kalshi's live contract repricing is particularly valuable — every bullpen decision, every Dodgers rally, every Mariners response moves the market in real time. That's a different experience from conventional sports betting where the odds are set before first pitch.
Claim the $500 bonus with the Kalshi promo code ACTION below:
Kalshi Promo Code ACTION — FAQ
What does the Kalshi promo code ACTION offer give you?
The Kalshi promo code ACTION unlocks a Trade $25, Get Up to $500 welcome bonus for new users. Complete $25 in cumulative qualifying trades after registering and Kalshi credits up to $500 in bonus trading funds to your account automatically. No winning trade required — the bonus unlocks the moment your qualifying trades reach the $25 threshold.
What is the difference between the Kalshi promo code and the Kalshi referral code?
There is no difference. The Kalshi promo code ACTION and the Kalshi referral code ACTION are interchangeable — entering either one during registration activates the same Trade $25, Get Up to $500 welcome offer. Use whichever term appears in the sign-up field.
How does Kalshi work compared to a sportsbook?
Kalshi is a CFTC-regulated peer-to-peer exchange, not a sportsbook. Instead of betting against a house at a fixed line, you buy and sell event contracts against other users at prices between $0.01 and $0.99. Those prices reflect live crowd-sourced probability and update continuously through every half-inning rather than locking in before first pitch. A contract priced at $0.60 means the market assigns that outcome a 60% chance. Winning contracts settle at $1 per share; losing ones expire at $0.
Can I split the $25 qualifying trade across multiple contracts?
Yes. The $25 qualifying threshold is cumulative — you can satisfy it through a single position or distribute it across multiple contracts within the same game or across different markets entirely. Once your total qualifying trades reach $25, the bonus posts automatically.
Which states is the Kalshi promo code ACTION available in?
The Kalshi promo code ACTION is available in most U.S. states. It is currently not available in AZ, IL, MA, MD, MI, MT, NV, or OH. Eligibility requires a legal U.S. residential address in an eligible state and a minimum age of 18. Confirm your state qualifies before depositing.
How quickly does the Kalshi bonus post after qualifying trades are completed?
The bonus posts automatically once your cumulative qualifying trades reach $25 — typically within minutes of the threshold being met. No customer service contact required and no manual claim process needed.
Can the Kalshi bonus be used on any game or just tonight's featured matchup?
The bonus credit can be applied to any eligible market on Kalshi — not just the featured game. Other MLB games, NFL futures, player props, and non-sports event contracts are all accessible once the $25 qualifying threshold is cleared.
What is the best way to clear the $25 qualifying threshold quickly?
The fastest path is a single moneyline position on tonight's featured game. Purchasing enough contracts on one outcome to spend at least $25 satisfies the full qualifying requirement in a single trade — no need to split across multiple markets unless you prefer that approach. The qualifying trade does not need to win.
Is Kalshi safe and regulated?
Yes. Kalshi is a federally regulated designated contract market operating under the same CFTC framework that governs futures exchanges. It was the first event-contract exchange to receive full CFTC regulatory approval in the United States. You trade peer-to-peer against other users — there is no house, no built-in margin, and no fixed line set against you.
What happens to the Kalshi bonus if my qualifying trades lose?
Nothing negative — the bonus posts regardless of whether your qualifying trades win or lose. The only requirement is that your cumulative qualifying trade total reaches $25. Once it does, the full welcome bonus is credited to your account automatically.
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
