Wednesday MLB Predictions: Key Matchups and Trading Opportunities on Kalshi

Baseball fans tracking Wednesday’s MLB slate have 15 games to consider, with several evening matchups carrying particular significance for playoff positioning. The SportsLine Projection Model, which simulates each game 10,000 times, offers data-driven insights alongside Kalshi prediction market pricing. A $25 sign-up bonus is available when you make $25+ in trades using the promo code CBSSPORTS. Click here to get started at Kalshi with the promo code CBSSPORTS.

Before diving in, verify that prediction markets are legal in your state and review the terms on the Kalshi promo code review page. Participation is subject to eligibility requirements and jurisdictional restrictions.

Best MLB Trades for Wednesday, Sept. 9

• Phillies to win vs. Astros ($0.59)
• Angels-Red Sox less than 8.5 runs ($0.43)
• Cubs-Brewers more than 7.5 runs ($0.53)
• Reds to win, or lose by less than 1.5 runs vs. Dodgers ($0.47)

Astros vs. Phillies

Hunter Brown (5-3, 3.31) faces Cristopher Sanchez (16-5, 2.58 ERA) in a pivotal AL West clash. Houston won 6-5 on Tuesday and is fighting for separation in the division, while Philadelphia sits comfortably in an NL wild card spot. The SportsLine model favors the Phillies in 61% of simulations, making Philadelphia’s $0.59/share price an interesting play against Houston’s $0.41.

Trade $25+ at Kalshi using the latest promo code CBSSPORTS and get $25 as a sign-up bonus:

Angels vs. Red Sox

Boston has transformed its season since July, climbing from sub-.500 to a playoff contender. Coming off a Tuesday loss to Los Angeles, the Red Sox (in a wild card spot) face Ryan Johnson (3-8, 5.17 ERA), while Jake Bennett (9-6, 3.34 ERA) starts for the Angels — a team already eliminated from postseason contention. The SportsLine model shows these teams combining for fewer than 9 runs in 66.2% of simulations.

The under 8.5 runs trades at $0.43/share on Kalshi, while the over is priced at $0.58. Use the latest Kalshi promo code CBSSPORTS to get a $25 bonus when you make $25+ in trades:

Cubs vs. Brewers

Milwaukee holds the best record in baseball and defeated Chicago 4-3 on Tuesday, but both teams remain in strong playoff positions. Kevin Gausman (9-11, 4.38 ERA) opposes Logan Henderson (9-3, 2.48 ERA) — a matchup of strong pitching that the SportsLine model surprisingly projects exceeding 7.5 runs in 68.7% of simulations.

The over 7.5 runs is available at $0.53/share, with the under at $0.48. Get $25 as a sign-up bonus after trading $25+ with the latest Kalshi promo code CBSSPORTS:

Reds vs. Dodgers

Yoshinobu Yamamoto (12-8, 2.67 ERA), the World Series MVP, takes the mound for Los Angeles as the Dodgers chase their seventh consecutive win against Rhett Lowder (6-9, 5.43 ERA) of Cincinnati. The Reds kept things close in Tuesday’s loss, and the SportsLine model projects a similar tight contest, with Cincinnati winning or losing by under 1.5 runs occurring in 56% of simulations.

This trade is available at $0.47/share on Kalshi, while LA winning by more than 1.5 runs is $0.54. Sign up for Kalshi using the promo code CBSSPORTS and get a $25 bonus:

Responsible Risk Management

Kalshi prioritizes user safety with risk management tools including trading breaks, voluntary opt-out options, and personalized funding limits. Prediction markets are regulated by the Commodity Futures Trading Commission (CFTC), an independent U.S. federal agency.

Event contracts trading involves a risk of substantial loss and is not suitable for all investors. Participation in prediction markets is subject to applicable eligibility requirements and may be restricted or prohibited in certain jurisdictions. Participants are responsible for ensuring compliance with applicable laws and regulations in their jurisdiction.

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