Kalshi promo code SL500: Earn up to a $500 trading bonus for Nationals-Braves, Mariners-Dodgers, MLB on Thursday

Thursday's 10-game MLB lineup features many key divisional races, and the Kalshi promo code SL500 allows new users to get up to a $500 bonus in trading credits when they make $25+ in trades. The Washington Nationals and Atlanta Braves clash in the opening game of a crucial NL East series that will be broadcast nationwide. Meanwhile, the Mariners and Dodgers wrap up their tied interleague series in the finale tonight, and the San Francisco Giants and San Diego Padres meet in an NL West showdown. Claim up to $500 in bonus trading credits after $25 in trades here with the Kalshi promo code SL500:

For more information, check out our Kalshi promo code review page, including for the offer's full terms and conditions.

The bonus trading credit an eligible user receives ranges from $15 to $500. Here is what percentage of new users will receive each credit value: 

Game 1 of the Washington Nationals and Atlanta Braves highly anticipated series begins tonight, and both teams hope to prevail. The Braves enter play leading the NL East and are looking to expand their divisional cushion at home. Atlanta has a strong 32-20 home record. Tonight's meeting in this four-game series will be nationally aired, as Washington is fighting for the final NL Ward card spot, currently sitting two games back. The Nationals' stars CJ Abrams ($0.19) and James Wood ($0.25) are both priced on Kalshi to have at least one home run this evening. They have been anchoring the offense for their team's push for the postseason. Kalshi also has tonight's game shaping up in favor of Atlanta, with the Braves at $0.58 per share to win against the Nationals, who are priced at $0.43.

The series winner is up for grabs tonight in the Seattle Mariners and Los Angeles Dodgers matchup. For the Mariners, a win can help decide their roster changes ahead of the August 3 trade deadline. Heading into this evening's meeting, the Dodgers have a sizeable 11.5-game lead in the NL West but are only up by a half-game for the top seed. Kalshi has the Dodgers priced at $0.59 per share to win tonight against the Mariners, who are priced at $0.42. Both teams have combined for eight total home runs in this series ahead of tonight. Cal Raleigh is priced at $0.21 per share on Kalshi to hit a home run, and Freddie Freeman is priced at $0.16 to also homer once tonight.

The San Francisco Giants travel to meet the San Diego Padres in the first of a four-game series tonight. The Giants are coming off a huge series win against the NL Central-leading Brewers, where they scored 16 runs, their July high, which was tied for their third-highest scoring output in 2026. San Francisco finds themself near the bottom of their division but heavily involved with roster moves ahead of the trade deadline. Robby Ray, who is trading at $0.69 on Kalshi to have 4 or more strikeouts, takes the mound this evening in what may potentially be his final start for San Francisco ahead of the trade deadline. San Diego begins this series on a five-game winning streak and right on the cusp of a multi-team battle for the final NL wild card spot. Fernando Tatis Jr. and Jackson Merrill are priced at $0.66 and $0.61 per share, respectively, to each have at least one hit tonight. The Padres are trading at $0.57 per share to win over the Giants, priced at $0.44. Trade on the MLB and more at Kalshi with the promo code SL500:

It's a top priority for Kalshi to keep its users safe. Kalshi offers several risk management tools for traders that can be used at any time, including trading breaks, voluntary opt-out, and a personalized funding limit. 

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Janine Brown