Brewers vs. Rays Prediction Markets: Kalshi Promo Code LABS55 Unlocks $55 for World Series Game 4

Use the Kalshi promo code LABS55 and trade $25 to unlock a $55 bonus for Brewers vs. Rays prediction markets tonight. World Series Game 4 starts at 8 p.m. ET on FOX, and Milwaukee needs one more win to clinch the World Series.

New users in 41 states and Washington, D.C. can claim the offer. Below, I break down the Brewers vs. Rays odds, the Kalshi prices, and my pick.

What Is the Kalshi Promo Code for World Series Game 4?

The Kalshi promo code for World Series Game 4 is LABS55. New users who trade $25 get a $55 bonus, and Kalshi offers it to adults 18 and older in 41 states and Washington, D.C.

Want more options? Browse the best prediction market promos before you pick a platform.

Brewers vs. Rays Prediction Markets Preview

Milwaukee leads 3-0 after a 10-1 rout in Game 3, which included a World Series record eight two-out runs in one inning.

Teams with a 3-0 lead have won 42 of 43 best-of-seven postseason series. Tampa Bay did win Game 4 in its last World Series trip, in 2020, on a Brett Phillips single.

Brewers vs. Rays Pitching and Lineups

Griffin Jax starts for Tampa Bay and carries a 1.88 ERA over his last six outings. He also gave up three runs in four innings against Cleveland in ALCS Game 3.

The Brewers haven’t named a starter. Dustin May, Kyle Harrison, Shane Drohan, or a reliever opening the game all fit, and Aaron Ashby, Abner Uribe, and Trevor Megill all got Monday night off.

Tampa Bay needs depth, too. Nick Martinez can give length, closer Bryan Baker may pitch more than one inning, and Shane McClanahan is out for the postseason with forearm tightness.

My eyes go to the lineup. Jackson Chourio is 8-for-14 in the Series with three stolen bases, and the Rays have scored one run in their last 17 innings.

William Contreras is hitting .419 this postseason and threw out three runners in the first three games.

Brewers vs. Rays Kalshi Prices

Kalshi prices the Brewers at 54¢ and the Rays at 47¢ on the moneyline. The two sides don’t add up to exactly 100¢, which is normal.

A 54¢ price implies about a 54% chance for Milwaukee, so prediction markets for tonight’s Brewers-Rays game expect a close result.

Across Kalshi World Series markets for this game, the total sits at 7.5 runs, and the under carries the higher price.

Platform	Moneyline	Run Line	Total
Kalshi	Brewers 54¢ | Rays 47¢	Brewers -1.5: 40¢ | Rays +1.5: 61¢	Over 7.5: 45¢ | Under 7.5: 56¢

My Brewers vs. Rays Prediction

My World Series Game 4 call: I am trading Brewers to win at 54¢ on Kalshi, in line with the Action Network Game 4 picks. Here is why:

• Milwaukee’s bullpen owns a 1.34 ERA across nearly 54 postseason innings, and its top relievers had Monday night off.
• Jax landed in the bottom half of the league in expected ERA, expected batting average against, barrel rate, and hard-hit rate this season.
• Chourio has multiple hits in all three Series games from the leadoff spot.

What worries me: Tampa Bay is in an elimination game, so manager Kevin Cash can use every arm, and Milwaukee hasn’t named a starter. That is why I prefer the moneyline to the 1.5-run line at 40¢.

If you like our content and picks, sign up on Kalshi to claim the bonus and start trading.

How to Claim the Kalshi Promo Code LABS55

1. Sign up for Kalshi and enter promo code LABS55.
2. Complete your registration.
3. Deposit funds into your Kalshi account to cover your trade.
4. Trade $25 to unlock the $55 bonus. Game 4 is a natural place to start.

Kalshi limits this offer to new users, and the full terms sit at the bottom of this page.

Sign up with the Kalshi promo code LABS55, deposit, and trade $25 to claim the $55 bonus before first pitch tonight.

I am watching the Brewers vs. Rays prediction markets at 8 p.m. ET, and you can compare platforms with the best prediction market apps.

Terms and conditions: Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/55. 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, OH, and WA.