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If you're ready to step up to the plate and start forecasting real outcomes, utilizing the Kalshi promo code TSN15 is the smartest way to begin. Right now, new customers can secure a $15 sign-up bonus here that unlocks after making just $10 in trades ahead of today's MLB games.
This straightforward welcome offer is perfectly timed for us to make predictions on today's standout matchups, including the Los Angeles Dodgers traveling to face the Philadelphia Phillies, and the Pittsburgh Pirates taking on the New York Yankees. Whether you are actively trading on today's slate or handicapping any other MLB game this week, this sign-up offer provides a simple, high-value way to jumpstart your account and chase a nice pay day.
Use Kalshi Promo Code TSN15 for MLB Predictions
| New User Offer | $15 Bonus |
| Terms and Conditions | 18+ and Present in the US |
| Date Last Verified | July 21, 2026 |
After claiming your welcome offer, we can immediately put those funds into action on today's exciting MLB slate. You can use your bonus to trade on marquee matchups, such as the Los Angeles Dodgers (63-38) squaring off against the Philadelphia Phillies (56-45), or take a position on the New York Yankees (56-44) as they host the Pittsburgh Pirates (52-49).
Trade $10 for a $15 Bonus
This Kalshi promo code is exclusively available for new Kalshi customers who are ready to dive into today’s MLB prediction markets. By creating your account and making a first-time deposit of at least $1, you position yourself to earn a $15 sign-up bonus. The beauty of this strategy is the low barrier to entry: that $15 bonus is unlocked immediately after you have made just $10 in trades on Kalshi's prediction markets.
Kalshi is available in all 50 states, and users must be at least 18 to play. Once your initial $10 in trades are settled and your bonus is unlocked, we can continue exploring a wide variety of MLB markets together.
Whether you want to predict the outcome of the New York Mets (42-59) versus the Milwaukee Brewers (63-37) or take a position on probable pitchers like Milwaukee's Brandon Sproat or New York's Zach Thornton, this offer provides the perfect opportunity to boost your bankroll while forecasting the action on the diamond.
MLB Probabilities for Tuesday, July 21st
When I'm handicapping the daily slate, I always start by looking at the raw probabilities to spot our best angles. Here is how today's prediction markets are shaping up:
| LAD @ PHI | LAD 44.8% / PHI 55.2% |
| PIT @ NYY | PIT 42.7% / NYY 57.3% |
| NYM @ MIL | NYM 43.0% / MIL 57.0% |
| DET @ CHC | DET 48.0% / CHC 52.0% |
| STL @ LAA | STL 49.0% / LAA 51.0% |
There is nothing better than finding real value on the board. If you trade a standard $10 on the day's heaviest favorite, the New York Yankees, a winning trade returns a modest profit of $6.71. Conversely, taking a shot and trading that same $10 on the heaviest underdog, the Pittsburgh Pirates, yields a much stronger $12.40 in profit if they pull off the upset.
Looking closer at the marquee matchup between the Los Angeles Dodgers and Philadelphia Phillies, I'm seeing clear statistical advantages for the road team. The Dodgers boast a dangerous lineup with a .260 team batting average, a .773 OPS, and 493 RBIs. By comparison, the Phillies are sitting at a .237 average and a .707 OPS. On the mound, the Dodgers' overall 3.56 ERA outpaces Philadelphia's 4.24 ERA, potentially making Los Angeles (+114) a highly appealing underdog option with a real chance to cash.
Meanwhile, the Yankees and Pirates present a classic clash of strengths. The Yankees lean on a sturdy pitching staff that holds a 3.42 team ERA compared to Pittsburgh's 4.30 ERA. However, the Pirates' offense has been far more potent, carrying a .263 batting average into the Bronx, while New York's lineup is hitting just .237 overall.
Kalshi Promo Code Guide: How to Sign Up
Ready to get in the trenches with me? Unlocking this welcome offer is a straightforward process. Follow my step-by-step guide below to claim your $15 bonus and begin trading on today's MLB action with confidence:
- Register Your Account: Create a new account here by providing your standard personal information (such as your name, address, and date of birth).
- Verify Your Identity: As a regulated platform, Kalshi requires you to provide proof of identification to secure your account.
- Enter the Promo Code: During the registration process, make sure to enter the Kalshi promo code TSN15 to attach the welcome offer to your new profile.
- Make a Deposit: Link a payment method and make a first-time deposit of at least $1 into your account.
- Trade to Unlock: Make a total of $10 worth of trades on Kalshi's prediction markets. You do not have to make a single trade worth $10; as long as your total sum of trades equals $10, you will qualify for the reward.
Once you have completed these steps and accumulated $10 in trades, your $15 sign-up bonus will immediately become available in your account.

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