MLB picks today: Saturday's MLB best bets include Rangers vs. Diamondbacks play [9/12/2026]

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Written by Dave Garofolo

Get MLB picks today and best bets for Saturday, September 12, 2026.

MLB Best Bets.
These MLB betting picks for September 12, 2026, are based on the latest odds and probabilities for Saturday's games.

Today’s MLB picks for September 12, 2026 are here, with Rangers vs. Diamondbacks among the top plays identified by our model across Saturday’s MLB play.

Dimers’ predictive analytics engine runs 24/7, going over the latest baseball odds to unearth legitimate betting edges. The result? Data-backed picks that help Dimers Pro members make smarter decisions.

List of MLB best bets tonight [9/12, updated 7:32PM ET]

Below, you’ll find today’s MLB best bets, ranked by edge for Saturday, September 12, 2026.

Rangers vs. Diamondbacks Over 8.5 runs (+108)

Our model has identified value on Over 8.5 runs in Rangers vs. Diamondbacks at +108 odds. A 58% probability produces an edge of 9.9%, making this the strongest play for today's MLB slate.

 

Diamondbacks -1.5 (+167)

Diamondbacks -1.5 carries a 3.4% edge and a probability of 40.9% at +167 odds, according to our model.

 

Athletics ML (+144)

Athletics ML at +144 odds shows a 2.4% edge, supported by a 43.4% probability in simulations.

 

Mariners vs. Athletics over 9.5 runs (+104)

A 2.4% edge and 51.4% probability make Mariners vs. Athletics over 9.5 runs a value play in the Mariners vs. Athletics matchup, per our model.

 

Diamondbacks ML (-122)

Diamondbacks ML at -122 odds presents a 2.1% edge, with simulations resulting in a probability of 57.1%.

 

MLB best bets summary: Saturday, 9/12/2026

As of 7:32PM ET, here are our top MLB bets by edge recommended by our model:

Matchup Bet Odds Edge Prob.
Rangers vs. Diamondbacks Over 8.5 runs +108 @ Polymarket 9.9% 58%
Rangers vs. Diamondbacks Diamondbacks -1.5 +167 @ Novig 3.4% 40.9%
Mariners vs. Athletics Athletics ML +144 @ Novig 2.4% 43.4%
Mariners vs. Athletics Over 9.5 runs +104 @ Polymarket 2.4% 51.4%
Rangers vs. Diamondbacks Diamondbacks ML -122 @ Polymarket 2.1% 57.1%
 

List of upcoming MLB games to bet on [9/12/2026]

Conclusion

Our MLB best bets are locked and loaded for September 12, 2026, featuring plays such as over 8.5 runs in the Rangers vs. Diamondbacks matchup and Diamondbacks -1.5. Powered by advanced simulations, these picks are here to boost your betting game.

Our predictions are sourced from current data to help you make informed decisions. For additional resources and advice, head to our Responsible Gambling hub.

All odds and probabilities in this article are correct and accurate at the time of publication.

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Written by
Dave Garofolo
Content Producer

Dave Garofolo uses sophisticated AI-driven analytics to make predictions and evaluate player performances in the NBA, MLB, NFL, NHL, NCAAM, and PGA TOUR tournaments, crafting insightful game and prop previews.

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