Last Updated on September 13, 2025 8:11 am by Michael Cash
The MLB slate for Saturday brings playoff-caliber intensity and pricing pockets bettors can exploit. Below are three MLB best bets for September 13, 2025 backed by rotation edges and bullpen leverage, plus two value underdogs worth a sprinkle—followed by quick market notes and a moneyline-only public betting snapshot to help you decide when to ride the crowd and when to fade it.
MLB Best Bets for September 13, 2025
1) Cleveland Guardians ML (–173) vs Chicago White Sox
Cleveland holds the run-prevention edge with superior K–BB metrics and a deeper late-inning bridge. Chicago’s offense has struggled to extend innings against higher-end strikeout arms.
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2) Philadelphia Phillies ML (–133) vs Kansas City Royals
The Phillies’ on-base skill and lineup depth create steady traffic, and their leverage relievers tilt the final frames. Priced fairly at home for a team with multiple win paths.
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3) Los Angeles Dodgers ML (–158) @ San Francisco Giants
LA pairs whiff power up front with an efficient, rested bullpen. If they control counts early, their leverage arms should lock down the last third.
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Saturday’s MLB Value Long Shots
1) St. Louis Cardinals ML (+154) @ Milwaukee Brewers
Divisional familiarity narrows the perceived gap. With a live starting profile and cleaner defense, St. Louis offers contrarian value at a strong plus-price.
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2) Los Angeles Angels ML (+144) @ Seattle Mariners
Public money leans Seattle, but if the Angels limit early traffic and keep the ball in the yard, the variance favors a live dog outcome at this number.
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Public Betting Snapshot (Moneyline Only)
- Guardians: strong majority — aligned with our pick.
- Phillies: strong majority — aligned.
- Dodgers: strong majority — aligned.
- Brewers: heavy majority — Public on Milwaukee; value may lie with St. Louis.
- Mariners: heavy majority — Public on Seattle; value may lie with the Angels.
👉🏼 Check today’s MLB public betting percentages (moneyline)
Quick Trend & Market Notes
- Home favorites priced ~–130 to –175 with top-half bullpens close strongly in September (fits Guardians, Phillies).
- Contrarian dogs in the +140 to +170 band show improved ROI when public support >70% on the favorite (fits Cardinals, Angels).
- Road favorites with OBP and strikeout edges sustain win expectancy late in series (fits Dodgers).
Today’s Card — Saturday, September 13, 2025 (ET)
- White Sox @ Guardians — Guardians –173
- Royals @ Phillies — Phillies –133
- Dodgers @ Giants — Dodgers –158
- Cardinals @ Brewers — Cardinals +154 (Value)
- Angels @ Mariners — Angels +144 (Value)