MLB picks today: Tuesday's MLB best bets include Athletics vs. Diamondbacks play [7/21/2026]
Get MLB picks today and best bets for Tuesday, July 21, 2026.
Today’s MLB picks for July 21, 2026 are here, with Athletics vs. Diamondbacks and Reds vs. Mariners among the top plays identified by our model across Tuesday’s MLB action.
Dimers’ predictive analytics engine runs 24/7, going over the latest baseball odds to discover top betting edges. The result? Data-backed plays that help Dimers Pro members make smarter decisions.
List of MLB best bets tonight [7/21, updated 9:10PM ET]
Below, you’ll find today’s best baseball bets, ranked by edge for Tuesday, July 21, 2026.
Athletics vs. Diamondbacks Over 9.5 runs (+108)
- Edge: 8.9%
- Probability: 56.9%
- Matchup: Athletics vs. Diamondbacks (9:40PM ET)
Our model has identified value on Over 9.5 runs in Athletics vs. Diamondbacks at +108 odds. A 56.9% probability produces an edge of 8.9%, making this the strongest play for today's MLB slate.
Reds vs. Mariners Over 7.5 runs (-102)
- Edge: 4.6%
- Probability: 55.1%
- Matchup: Reds vs. Mariners (9:40PM ET)
Reds vs. Mariners over 7.5 runs carries a 4.6% edge and a probability of 55.1% at -102 odds, according to our model.
Cardinals vs. Angels Over 9.5 runs (+111)
- Edge: 3.1%
- Probability: 50.5%
- Matchup: Cardinals vs. Angels (9:38PM ET)
Cardinals vs. Angels Over 9.5 runs at +111 odds shows a 3.1% edge, supported by a 50.5% probability in simulations.
MLB best bets summary: Tuesday, 7/21/2026
As of 9:10PM ET, here are our top MLB bets by edge recommended by our model:
| Matchup | Bet | Odds | Edge | Probability |
|---|---|---|---|---|
| Athletics vs. Diamondbacks | Over 9.5 runs | +108 @ Novig | 8.9% | 56.9% |
| Reds vs. Mariners | Over 7.5 runs | -102 @ Novig | 4.6% | 55.1% |
| Cardinals vs. Angels | Over 9.5 Runs | +111 @ Novig | 3.1% | 50.5% |
List of upcoming MLB games to bet on [7/21/2026]
- Cardinals vs. Angels (9:38PM ET, Tuesday)
- Reds vs. Mariners (9:40PM ET, Tuesday)
- Athletics vs. D-Backs (9:40PM ET, Tuesday)
- Pirates vs. Yankees (1:35PM ET, Wednesday)
- Giants vs. Royals (2:10PM ET, Wednesday)
- Mets vs. Brewers (2:10PM ET, Wednesday)
- Nationals vs. Rockies (3:10PM ET, Wednesday)
- Reds vs. Mariners (3:40PM ET, Wednesday)
- Athletics vs. D-Backs (3:40PM ET, Wednesday)
- Cardinals vs. Angels (4:07PM ET, Wednesday)
- Twins vs. Guardians (6:40PM ET, Wednesday)
- Dodgers vs. Phillies (6:40PM ET, Wednesday)
- Orioles vs. Red Sox (7:10PM ET, Wednesday)
- White Sox vs. Rangers (8:05PM ET, Wednesday)
- Tigers vs. Cubs (8:10PM ET, Wednesday)
- Marlins vs. Astros (8:10PM ET, Wednesday)
Conclusion
Our MLB best bets are locked and loaded for July 21, 2026, featuring plays such as over 9.5 runs in the Athletics vs. Diamondbacks matchup and over 7.5 runs in the Reds vs. Mariners matchup. Powered by advanced simulations, these picks are here to boost your betting game.
Our predictions are grounded in 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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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.
