MLB player props today: Monday's best props include Luis Castillo [8/17/2026]

Dimers' MLB player props are live for August 17, 2026, with today's top prop bets led by the likes of Luis Castillo, Mason Barnett and Blake Snell.

Our MLB player props model runs continuously to analyze every matchup—including D-Backs vs. Red Sox and White Sox vs. Cubs—and surface the best MLB player prop bets across the market.

List of MLB prop picks for Monday, 8/17

Sourced from 110+ total MLB props on site today, below are the top 10 MLB player props for August 17, ranked by probability.

Luis Castillo under 2.5 walks allowed (-171)

• Edge: 6.5%
• Probability: 69.6%
• Game: White Sox vs. Cubs (8:05PM ET)

Our model has flagged value on CHI White Sox' Luis Castillo under 2.5 walks allowed. A probability of 69.6% gives this play an edge of 6.5% at -171 odds.

Mason Barnett over 1.5 walks allowed (-165)

• Edge: 7.2%
• Probability: 69.4%
• Game: Athletics vs. Royals (7:40PM ET)

Mason Barnett’s walks allowed prop shows a 69.4% probability and an 7.2% edge at -165 odds, according to our model.

Blake Snell over 1.5 walks allowed (-163)

• Edge: 6.6%
• Probability: 68.5%
• Game: Dodgers vs. Rockies (8:40PM ET)

The data highlights value on Blake Snell over 1.5 walks allowed, with simulations showing a 68.5% probability and a 6.6% edge at -163.

Walker Buehler over 1.5 walks allowed (-172)

• Edge: 4.4%
• Probability: 67.6%
• Game: Padres vs. Mets (7:10PM ET)

Our model finds value on Walker Buehler over 1.5 walks allowed, with a 67.6% probability and an edge of 4.4% at -172 odds.

Janson Junk over 5.5 hits allowed (-134)

• Edge: 9.4%
• Probability: 66.7%
• Game: Marlins vs. Phillies (6:40PM ET)

Simulations indicate value on Janson Junk over 5.5 hits allowed for Miami, showing an edge of 9.4% at -134 odds.

Martín Pérez over 4.5 hits allowed (-155)

• Edge: 3.9%
• Probability: 64.7%
• Game: Braves vs. Twins (7:40PM ET)

Martín Pérez’s hits allowed prop shows an edge of 3.9% at -155 odds, supported by a 64.7% probability according to our model.

Mitch Bratt over 4.5 hits allowed (-150)

• Edge: 4.0%
• Probability: 64.0%
• Game: D-Backs vs. Red Sox (7:10PM ET)

Our model highlights value on Mitch Bratt over 4.5 hits allowed for Arizona, with a 64.0% probability and a 4.0% edge at -150 odds.

Mason Barnett over 4.5 hits allowed (-143)

• Edge: 5.1%
• Probability: 64.0%
• Game: Athletics vs. Royals (7:40PM ET)

The data shows value on Mason Barnett over 4.5 hits allowed, supported by a 64.0% probability at -143 odds and an edge of 5.1%.

Walker Buehler over 4.5 hits allowed (-150)

• Edge: 2.9%
• Probability: 62.9%
• Game: Padres vs. Mets (7:10PM ET)

A 2.9% edge on the over 4.5 hits allowed line makes Walker Buehler a value play in Padres vs. Mets, supported by a 62.9% probability at -150 odds.

Brandon Young under 5.5 hits allowed (-121)

• Edge: 8.1%
• Probability: 62.9%
• Game: Orioles vs. Rays (6:05PM ET)

Simulations show value on Brandon Young under 5.5 hits allowed here, with a 62.9% probability and 8.1% edge at -121 odds.

MLB player prop summary: Monday, August 17, 2026

A quick summary of today’s top props by probability according to our model as of 5:53PM ET:

Conclusion

For August 17, 2026, our MLB prop bets feature players such as Luis Castillo, Mason Barnett and Blake Snell. Each pick is grounded in real-time data and advanced simulations to help you bet with clarity and purpose.

Built using automation and human oversight, this article draws on the latest data to deliver accurate, timely insights. If using this article for betting, Dimers promotes responsible gambling.