MLB PLAYER PROPS · Monday, September 14
Final. These games have been played; every price is as published.
3 selections from 12 MLB hits + runs + RBIs props that cleared our form and pricing filters on Monday's slate. Each one shows the price, the book quoting it, the matchup behind it, and the reason it might be wrong.
Our graded record is 82-61-5 at +37.1% ROI since Sep 25, as of Oct 19. Every public pick since Sep 25, 2026, losers included.
| Pick | Price | Book | Why |
|---|---|---|---|
| Kyle Karros Under 1.5 H+R+RBI | -110 | BetMGM | under in 80% of his last ten; Casey Mize has allowed hard contact on 39.7% of balls in play, below the 42% league mark |
| Cole Carrigg Under 1.5 H+R+RBI | +120 | bet365 | under in 50% of his last ten; Carrigg hits the ball hard at only the 28th percentile of qualified regulars |
| Colson Montgomery Over 0.5 H+R+RBI | -113 | DraftKings | over in 70% of his last ten; Montgomery hits the ball hard at the 65th percentile of qualified regulars |
Form here is 60% of a player's last ten games and 40% of the season, weighed against what the books are charging once the vig is stripped out, and against what the matchup says. A prop only appears when the matchup backs it as well as the form does.
Angle 1
Kyle Karros has gone under 1.5 H+R+RBI in 56% of 116 games this season and 80% across the last ten. He faces Casey Mize.
The case against
The price is not the problem here. The form read still has to hold at -110.
The last ten (80%) sits a long way from the season rate (56%), so this leans on a streak continuing rather than on a settled level.
Angle 2
Cole Carrigg has gone under 1.5 H+R+RBI in 55% of 77 games this season and 50% across the last ten. He faces Casey Mize.
The case against
+120 is not what makes this one risky. The form read is, and it still has to hold.
Angle 3
Colson Montgomery has gone over 0.5 H+R+RBI in 62% of 141 games this season and 70% across the last ten. He faces Gavin Williams.
The case against
Nothing about -113 helps here. The form read has to be right for this one to pay.
These are our strongest market-specific props, chosen on the best combination of recent form, season baseline, the matchup itself, and the line actually available. The Lab's card is a separate five-pick slate selected across every market, and it is graded on the public record.
Where the record lives: the Lab's public record starts Sep 25, 2026, the card and the boosts together, with every pick and every loss on the results page. Each prop above is frozen with the exact price and book shown from the moment it was published. These angles are not on that graded record; the card and the boosts are.
Same slate: Best MLB hits props for Monday.
The full card: MLB player props today, every pick with the price it was taken at and the argument against it.
Built from the Lab's board for Monday, September 14. Prices were read across every book quoting each line at Sep 14, 10:30 AM ET and are frozen at those numbers. Prices move; check before you bet. The sentences above are generated from the same numbers printed beside them. 19+. If betting stops being fun, ConnexOntario, 1-866-531-2600.