MLB PLAYER PROPS · Tuesday, September 8
Final. These games have been played; every price is as published.
3 selections from 25 MLB hits + runs + RBIs props that cleared our form and pricing filters on Tuesday'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 |
|---|---|---|---|
| Royce Lewis Under 1.5 H+R+RBI | -135 | Bovada | under in 70% of his last ten; Drew Anderson has allowed hard contact on 39.3% of balls in play, below the 42% league mark |
| Travis d'Arnaud Under 0.5 H+R+RBI | +110 | BetMGM | under in 90% of his last ten; Patrick Sandoval has allowed hard contact on 33.8% of balls in play, below the 42% league mark |
| Vaughn Grissom Under 1.5 H+R+RBI | -120 | theScore Bet | under in 80% of his last ten; Patrick Sandoval has allowed hard contact on 33.8% of balls in play, below the 42% league mark |
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
Royce Lewis has gone under 1.5 H+R+RBI in 51% of 109 games this season and 70% across the last ten. He faces Drew Anderson.
The case against
The price is the weak part of this one, and the form read has to carry it at -135.
Angle 2
Travis d'Arnaud has gone under 0.5 H+R+RBI in 67% of 27 games this season and 90% across the last ten. He faces Patrick Sandoval.
The case against
+110 is not what makes this one risky. The form read is, and it still has to hold.
The last ten (90%) sits a long way from the season rate (67%), so this leans on a streak continuing rather than on a settled level.
Angle 3
Vaughn Grissom has gone under 1.5 H+R+RBI in 55% of 100 games this season and 80% across the last ten. He faces Patrick Sandoval.
The case against
Nothing about -120 helps here. The form read has to be right for this one to pay.
The last ten (80%) sits a long way from the season rate (55%), so this leans on a streak continuing rather than on a settled level.
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: Diamondbacks vs Royals player props.
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 Tuesday, September 8. Prices were read across every book quoting each line at Sep 8, 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.