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

Keider Montero over 1.5 earned runs (-158)

• Edge: 8.9%
• Probability: 70.2%
• Game: Brewers vs. Tigers (6:40PM ET)

Our model has flagged value on Detroit's Keider Montero over 1.5 earned runs. A probability of 70.2% gives this play an edge of 8.9% 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: 3.1%
• Probability: 65.5%
• Game: Brewers vs. Tigers (6:40PM ET)

The data highlights value on Keider Montero over 14.5 outs recorded, with simulations showing a 65.5% probability and a 3.1% 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.

Chase Burns under 17.5 outs recorded (-136)

• Edge: 6.8%
• Probability: 64.4%
• Game: Reds vs. Rays (6:40PM ET)

Simulations indicate value on Chase Burns under 17.5 outs recorded for Cincinnati, showing an edge of 6.8% at -136 odds.

Steven Matz under 5.5 strikeouts (-125)

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

Steven Matz’s strikeouts prop shows an edge of 7.8% at -125 odds, supported by a 63.3% probability according to our model.

Foster Griffin over 15.5 outs recorded (-117)

• Edge: 6.2%
• Probability: 60.1%
• Game: Braves vs. Nationals (6:45PM ET)

Our model highlights value on Foster Griffin over 15.5 outs recorded for Washington, with a 60.1% probability and a 6.2% edge at -117 odds.

Parker Messick under 16.5 outs recorded (+106)

• Edge: 9.4%
• Probability: 57.9%
• Game: Astros vs. Guardians (6:10PM ET)

The data shows value on Parker Messick under 16.5 outs recorded, supported by a 57.9% probability at +106 odds and an edge of 9.4%.

Jacob Lopez over 5.5 strikeouts (-102)

• Edge: 7.1%
• Probability: 57.5%
• Game: Athletics vs. Mariners (9:40PM ET)

A 7.1% edge on the over 16.5 strikeouts line makes Jacob Lopez a value play in Athletics vs. Mariners, supported by a 57.5% probability at -102 odds.

Sean Burke over 15.5 outs recorded (+118)

• Edge: 5.1%
• Probability: 56.9%
• Game: White Sox vs. D-Backs (9:40PM ET)

Simulations show value on Sean Burke over 15.5 outs recorded here, with a 56.9% probability and 5.1% edge at +118 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 3:57AM ET:

Matchup	Prop	Odds	Edge	Probability
Brewers vs. Tigers	Keider Montero over 1.5 earned runs	-158 @ DraftKings	8.9%	70.2%
Astros vs. Guardians	Parker Messick under 5.5 strikeouts	-138 @ DraftKings	9.4%	68.1%
Brewers vs. Tigers	Keider Montero over 14.5 outs recorded	-166 @ DraftKings	4.9%	65.3%
Brewers vs. Tigers	Keider Montero over 3.5 strikeouts	-153 @ DraftKings	4.9%	65.3%
Reds vs. Rays	Chase Burns under 17.5 outs recorded	-136 @ DraftKings	6.8%	64.4%
Reds vs. Rays	Steven Matz under 5.5 strikeouts	-125 @ DraftKings	7.8%	63.3%
Braves vs. Nationals	Foster Griffin over 15.5 outs recorded	-117 @ DraftKings	6.2%	60.1%
Astros vs. Guardians	Parker Messick under 16.5 outs recorded	+106 @ DraftKings	9.4%	57.9%
Athletics vs. Mariners	Jacob Lopez over 16.5 strikeouts	-102 @ FanDuel	7.1%	57.5%
White Sox vs. D-Backs	Sean Burke over 15.5 outs recorded	+118 @ DraftKings	5.1%	56.9%

Conclusion

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