MLB player props today: Monday's best props include Zac Gallen [5/18/2026]

Dimers' MLB props are live for May 18, 2026, with today's top prop bets led by the likes of Zac Gallen, Brandon Sproat and Jake Irvin.

Our MLB player props model runs continuously, analyzing every matchup, including Giants vs. D-Backs and Brewers vs. Cubs, to surface the best MLB player prop bets across the market.

List of MLB prop bets for Monday, 5/18

Sourced from 120+ total props today, below are the top ten MLB player props for May 18, ranked by probability.

Zac Gallen over 3.5 strikeouts (-152)

• Edge: 9.3%
• Probability: 69.6%
• Game: Giants vs. D-Backs (9:40PM ET)

Our model has flagged value on Arizona's Zac Gallen over 3.5 strikeouts. A probability of 69.6% gives this play an edge of 9.3% at -152 odds.

Brandon Sproat under 2.5 walks allowed (-170)

• Edge: 5.5%
• Probability: 68.4%
• Game: Brewers vs. Cubs (7:40PM ET)

Brandon Sproat’s walks allowed prop shows a 68.4% probability and an 5.5% edge at -170 odds, according to our model.

Jake Irvin under 4.5 strikeouts (-147)

• Edge: 8.2%
• Probability: 67.8%
• Game: Mets vs. Nationals (6:45PM ET)

The data highlights value on Jake Irvin under 4.5 strikeouts, with simulations showing a 67.8% probability and an 8.2% edge at -147.

Slade Cecconi over 3.5 strikeouts (-147)

• Edge: 7.2%
• Probability: 66.8%
• Game: Guardians vs. Tigers (6:40PM ET)

Our model finds value on Slade Cecconi over 3.5 strikeouts, with a 66.8% probability and an edge of 7.2% at -147 odds.

Michael King over 1.5 earned runs (-162)

• Edge: 3.4%
• Probability: 65.2%
• Game: Dodgers vs. Padres (9:40PM ET)

Simulations indicate value on Michael King over 1.5 earned runs for San Diego, showing an edge of 3.4% at -162 odds.

Christian Scott under 4.5 strikeouts (-130)

• Edge: 8.6%
• Probability: 65.2%
• Game: Mets vs. Nationals (6:45PM ET)

Christian Scott’s strikeouts prop shows an edge of 8.6% at -130 odds, supported by a 65.2% probability according to our model.

Jose Quintana over 2.5 strikeouts (-161)

• Edge: 3.3%
• Probability: 65.0%
• Game: Rangers vs. Rockies (8:40PM ET)

Our model highlights value on Jose Quintana over 2.5 strikeouts for Colorado, with a 65.0% probability and a 3.3% edge at -161 odds.

Robbie Ray under 3.5 earned runs (-155)

• Edge: 2.8%
• Probability: 63.6%
• Game: Giants vs. D-Backs (9:40PM ET)

The data shows value on Robbie Ray under 3.5 earned runs, supported by a 63.6% probability at -155 odds and an edge of 2.8%.

Shota Imanaga under 5.5 strikeouts (-144)

• Edge: 4.4%
• Probability: 63.4%
• Game: Brewers vs. Cubs (7:40PM ET)

A 4.4% edge on the under 3.5 strikeouts line makes Shota Imanaga a value play in Brewers vs. Cubs, supported by a 63.4% probability at -144 odds.

Framber Valdez over 1.5 walks allowed (-146)

• Edge: 4.0%
• Probability: 63.3%
• Game: Guardians vs. Tigers (6:40PM ET)

Simulations show value on Framber Valdez over 1.5 walks allowed here, with a 63.3% probability and 4.0% edge at -146 odds.

MLB player prop summary: Monday, May 18, 2026

A quick summary of today’s top props by probability according to our model as of 5:59PM ET:

Conclusion

For May 18, 2026, our MLB prop bets feature players such as Zac Gallen, Brandon Sproat and Jake Irvin. 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 encourages responsible gambling.