Best MLB RBIs Matchups — Sunday, June 21, 2026
Top rbis spot: Alec Bohm
Alec Bohm (PHI) tops the board at 100, facing LHP David Peterson. The righty is driving in runs at .191 RBI/PA against lefties this year — and .400 over the last two weeks, an elite bat that turns into a RBI in about 17% of his trips. And David Peterson has been getting lit up by lefties lately — .273 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 4.3 trips, so the volume's there. He's owned David Peterson too — .333 across 27 career trips. It all sets up in a neutral park, weather helping.
The rest of the top of the board
- Andy Pages (LAD) (100) vs RHP Brandon Young: an excellent bat at .141 into an arm vulnerable to the same side (.125).
- Brandon Lowe (PIT) (100) vs RHP Michael Lorenzen: an excellent bat at .156 into an arm stingy with runs against the same side (.095), hitter's park, hot bat.
- Willi Castro (COL) (99) vs RHP Jared Jones: an excellent bat at .141 into an arm getting lit up by the same side (.233), hitter's park.
- Tyler Soderstrom (ATH) (99) vs LHP Reid Detmers: an elite bat at .168 into an arm stingy with runs against the same side (.000).
- Wade Meckler (LAA) (94) vs RHP Jack Perkins: a strong bat at .127 into an arm stingy with runs against the same side (.065).
- Pete Alonso (BAL) (93) vs RHP Emmet Sheehan: an excellent bat at .151 into an arm getting lit up by the same side (.167).
- TJ Rumfield (COL) (87) vs RHP Jared Jones: a strong bat at .128 into an arm getting lit up by the same side (.233), hitter's park.
Platoon edges to target
- Alec Bohm (PHI) — righty bat vs LHP, .191 against lefties this year.
- Brandon Lowe (PIT) — lefty bat vs RHP, .197 against righties this year.
- Willi Castro (COL) — lefty bat vs RHP, .151 against righties this year.
- Wade Meckler (LAA) — lefty bat vs RHP, .188 against righties this year.
- TJ Rumfield (COL) — lefty bat vs RHP, .136 against righties this year.
Best parks to drive in runs today
Coors Field is playing as a real hitter's park today (+6% run-scoring park). Top bat there: Brandon Lowe (PIT) at 100.
How it played out
4 of the top 10 rbis matchups landed at least one RBI. Top play Alec Bohm 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