Best MLB Total Bases Matchups — Saturday, August 15, 2026
Top total bases spot: Ceddanne Rafaela
Ceddanne Rafaela (BOS) tops the board at 100, facing RHP Jared Jones. The righty is racking up bases at .422 TB/PA against righties this year — and .580 over the last two weeks, a strong bat that turns into a total base in about 44% of his trips. And Jared Jones has been getting squared up by righties lately — 1.177 total bases 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. No real history against Jared Jones. It all sets up in a neutral park.
The rest of the top of the board
- Joc Pederson (TEX) (100) vs RHP J.T. Ginn: a solid bat at .395 into an arm tough on the same side (.150), due to bounce back.
- Henry Bolte (ATH) (92) vs LHP MacKenzie Gore: a solid bat at .379 into an arm tough on the same side (.281), due to bounce back.
- Jackson Chourio (MIL) (89) vs LHP Justin Wrobleski: a solid bat at .406 into an arm getting squared up by the same side (.765).
- Yordan Alvarez (HOU) (86) vs RHP Emerson Hancock: a strong bat at .448 into an arm getting squared up by the same side (.588).
- Rafael Devers (SF) (85) vs RHP Michael Lorenzen: a solid bat at .406 into an arm getting squared up by the same side (.480).
- Wade Meckler (LAA) (83) vs RHP Randy Dobnak: a league-average bat at .360 into an arm mostly containing the same side (.333), hot bat.
- Jac Caglianone (KC) (83) vs LHP Reid Detmers: a strong bat at .433 into an arm tough on the same side (.200), hot bat.
Arms giving up extra bases today
- RHP Jared Jones has been getting squared up by righties — .475 total bases per batter faced. Bats to target: Ceddanne Rafaela (BOS), Willson Contreras (BOS), and Caleb Durbin (BOS).
- LHP Justin Wrobleski has been getting squared up by lefties — .448 total bases per batter faced. Bats to target: Jackson Chourio (MIL), Luis Lara (MIL), and Andrew Vaughn (MIL).
- RHP Michael Lorenzen has been vulnerable to righties — .417 total bases per batter faced. Bats to target: Rafael Devers (SF), Drew Gilbert (SF), and Jung Hoo Lee (SF).
- LHP Joey Cantillo has been vulnerable to lefties — .412 total bases per batter faced. Bats to target: Fernando Tatis Jr. (SD), Manny Machado (SD), and Jake Cronenworth (SD).
Platoon edges to target
- Joc Pederson (TEX) — lefty bat vs RHP, .441 against righties this year.
- Henry Bolte (ATH) — righty bat vs LHP, .363 against lefties this year.
- Jackson Chourio (MIL) — righty bat vs LHP, .458 against lefties this year.
- Yordan Alvarez (HOU) — lefty bat vs RHP, .544 against righties this year.
- Rafael Devers (SF) — lefty bat vs RHP, .487 against righties this year.
How it played out
5 of the top 10 total bases matchups landed at least one total base. Top play Ceddanne Rafaela finished with 2 total bases. 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 total bases matchups
Each score (0–100) starts with the hitter's total bases 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 total bases board is
The Total Bases board projects how many bases a hitter racks up vs the posted total-bases line. 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 extra-base pop vs this arm.
- The park.
- Recent contact quality.
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?
Total bases grades right at break-even even when we tune it to the hilt — the book prices the marginal leans efficiently. Transparency board.
How to use it
See who the model projects for extra-base damage; no systematic edge to bet.
Everything here is a research signal from the model, graded in public — not betting advice, and no outcome is guaranteed.
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