MLB player props today: Tuesday's best props include Keider Montero [4/21/2026]

Dimers' MLB props are live for April 21, 2026, with today's top prop bets led by the likes of Keider Montero, Parker Messick and Kyle Harrison.

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

List of MLB prop picks for Tuesday, 4/21

Sourced from 45+ total props today, below are the top ten MLB player props for April 21, ranked by probability.

Keider Montero over 1.5 earned runs (-158)

• Edge: 8.7%
• Probability: 69.9%
• Game: Brewers vs. Tigers (6:40PM ET)

Our model has found value on Detroit's Keider Montero over 1.5 earned runs. A probability of 69.9% gives this play an edge of 8.7% at -158 odds.

Parker Messick under 5.5 strikeouts (-138)

• Edge: 9.4%
• Probability: 68.1%
• Game: Astros vs. Guardians (6:10PM ET)

Parker Messick’s strikeouts prop shows a 68.1% probability and an 9.4% edge at -138 odds, according to our model.

Keider Montero over 14.5 outs recorded (-166)

• Edge: 3.2%
• Probability: 65.6%
• Game: Brewers vs. Tigers (6:40PM ET)

The data highlights value on Keider Montero over 14.5 outs recorded, with simulations showing a 65.6% probability and a 3.2% edge at -166.

Keider Montero over 3.5 strikeouts (-153)

• Edge: 4.9%
• Probability: 65.3%
• Game: Brewers vs. Tigers (6:40PM ET)

Our model finds value on Keider Montero over 3.5 strikeouts, with a 65.3% probability and an edge of 4.9% at -153 odds.

Keider Montero over 4.5 hits allowed (-120)

• Edge: 6.8%
• Probability: 65.1%
• Game: Brewers vs. Tigers (6:40PM ET)

Simulations indicate value on Keider Montero over 4.5 hits allowed for Detroit, showing an edge of 6.8% at -120 odds.

Kyle Harrison over 1.5 earned runs (-162)

• Edge: 3.1%
• Probability: 65.0%
• Game: Brewers vs. Tigers (6:40PM ET)

Kyle Harrison’s earned runs prop shows an edge of 3.1% at -162 odds, supported by a 65.0% probability according to our model.

Chris Paddack under 4.5 strikeouts (-133)

• Edge: 7.7%
• Probability: 64.8%
• Game: Cardinals vs. Marlins (6:40PM ET)

Our model highlights value on Chris Paddack under 4.5 strikeouts for Miami, with a 64.8% probability and a 7.7% edge at -133 odds.

Chase Burns under 17.5 outs recorded (-132)

• Edge: 7.5%
• Probability: 64.4%
• Game: Reds vs. Rays (6:40PM ET)

The data shows value on Chase Burns under 17.5 outs recorded, supported by a 64.4% probability at -132 odds and an edge of 7.5%.

Kazuma Okamoto to get a hit (-158)

• Edge: 3.1%
• Probability: 64.4%
• Game: Blue Jays vs. Angels (9:38PM ET)

A 3.1% edge on the to get a hit line makes Kazuma Okamoto a value play in Blue Jays vs. Angels, supported by a 64.4% probability at -158 odds.

Steven Matz under 5.5 strikeouts (-125)

• Edge: 7.8%
• Probability: 63.3%
• Game: Reds vs. Rays (6:40PM ET)

Simulations show value on Steven Matz under 5.5 strikeouts here, with a 63.3% probability and 7.8% edge at -125 odds.

MLB player prop summary: Tuesday, April 21, 2026

A quick summary of today’s top props by probability according to our model as of 5:56PM ET:

Conclusion

For April 21, 2026, our MLB prop bets feature players such as Keider Montero, Parker Messick and Kyle Harrison. 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.