Best MLB RBIs Matchups — Sunday, August 9, 2026
Top rbis spot: Jonathan Aranda
Jonathan Aranda (TB) tops the board at 100, facing RHP Emerson Hancock. The lefty is driving in runs at .180 RBI/PA against righties this year — and .212 over the last two weeks, an elite bat that turns into a RBI in about 16% of his trips. And Emerson Hancock has been getting lit up by righties lately — .161 RBIs per batter faced. One catch: the bullpen behind him has been stingy to that side late. He's hitting in a spot worth about 4.5 trips, so the volume's there. He's just .000 in 1 career PA against Emerson Hancock, but that's a tiny sample and the matchup says regression. It all sets up in a neutral park.
The rest of the top of the board
- Osleivis Basabe (SF) (100) vs RHP Troy Melton: an elite bat at .229 into an arm stingy with runs against the same side (.000).
- Manny Machado (SD) (100) vs RHP Cristian Javier: an excellent bat at .154 into an arm stingy with runs against the same side (.071).
- Esmerlyn Valdez (PIT) (97) vs LHP Sean Manaea: an elite bat at .214 into an arm stingy with runs against the same side (.043).
- Shohei Ohtani (LAD) (94) vs LHP Eduardo Rodriguez: an excellent bat at .148 into an arm stingy with runs against the same side (.095).
- Yordan Alvarez (HOU) (93) vs RHP Randy Vásquez: an excellent bat at .147 into an arm stingy with runs against the same side (.000).
- Ildemaro Vargas (AZ) (88) vs LHP Justin Wrobleski: an elite bat at .169 into an arm getting lit up by the same side (.323).
- Junior Caminero (TB) (88) vs RHP Emerson Hancock: an excellent bat at .158 into an arm mostly holding up against the same side (.100), due to bounce back.
Platoon edges to target
- Jonathan Aranda (TB) — lefty bat vs RHP, .180 against righties this year.
- Esmerlyn Valdez (PIT) — righty bat vs LHP, .313 against lefties this year.
- Yordan Alvarez (HOU) — lefty bat vs RHP, .175 against righties this year.
- Ildemaro Vargas (AZ) — righty bat vs LHP, .215 against lefties this year.
- Tommy Edman (LAD) — righty bat vs LHP, .229 against lefties this year.
How it played out
0 of the top 10 rbis matchups landed at least one RBI. Top play Jonathan Aranda finished with 0 RBIs. We post the result next to every projection so you can grade the board yourself — and so the model gets re-tuned against what actually happened.
How to read these rbis matchups
Each score (0–100) starts with the hitter's RBIs per plate appearance against the hand he's facing — weighted toward the last two weeks, then the season, then a two-year baseline. Then it layers in the bullpen, his spot in the order, and park and weather. Higher means more of it points his way. It's context, not a lock — a great spot still goes 0-for-4 sometimes, and a tough one runs into one. The edge is in stacking the odds, and since we grade every board, you can see how often the top of the list delivers.
What the RBIs board is
The RBIs board projects the chance a hitter drives in a run, given his slot and the bats around him. One statistical model scores every matchup on the slate the same way — a star and a backup judged on the matchup in front of them, not their name — and every number is graded against the real box score once the games go final.
How the model gets its number
It isn't a gut call or a name game. The projection is built from a few things:
- His run-driving rate.
- How often the hitters ahead of him are on base.
- The arm he faces and the park.
Those pieces combine into one number, and the model re-tunes itself weekly against how its past calls actually landed.
Is there a betting edge here?
RBIs is lumpy — runs cluster — and once you price the 1+ line with a clustering-aware model instead of a naive one, the apparent edge vanishes. It grades efficient. So this is a transparency board.
How to use it
Good for spotting the cleanup-spot smash setups; not a market we've found a bettable edge in.
Everything here is a research signal from the model, graded in public — not betting advice, and no outcome is guaranteed.
Learn more: How the model works · The picks story · Today's plays