Best MLB Walks Matchups — Tuesday, June 30, 2026
Top walks spot: Kyle Schwarber
Kyle Schwarber (PHI) tops the board at 100, facing RHP Bubba Chandler. The lefty is working counts at .150 BB/PA against righties this year — and .129 over the last two weeks, a strong bat that turns into a walk in about 12% of his trips. And Bubba Chandler has been handing out free passes to righties lately — .133 walks per batter faced. The bullpen behind him is roughly average to that side. He's hitting in a spot worth about 4.5 trips, so the volume's there. He's owned Bubba Chandler too — .500 across 2 career trips. It all sets up in a neutral park, weather helping.
The rest of the top of the board
- TJ Rumfield (COL) (100) vs RHP Eury Pérez: a strong bat at .107 into an arm tough to walk against the same side (.000), hitter's park, hot bat.
- Rafael Devers (SF) (95) vs RHP Brandon Pfaadt: a strong bat at .107 into an arm with little track record against the same side.
- Bryce Eldridge (SF) (92) vs RHP Brandon Pfaadt: a strong bat at .113 into an arm with little track record against the same side.
- Geraldo Perdomo (AZ) (91) vs RHP Landen Roupp: an excellent bat at .144 into an arm fairly stingy with walks against the same side (.071), hot bat.
- Bryce Harper (PHI) (89) vs RHP Bubba Chandler: a strong bat at .113 into an arm handing out free passes to the same side (.133).
- Juan Soto (NYM) (89) vs RHP Kevin Gausman: an excellent bat at .148 into an arm handing out free passes to the same side (.182).
- Yordan Alvarez (HOU) (79) vs RHP Joe Ryan: an elite bat at .169 into an arm tough to walk against the same side (.037), due to bounce back.
Platoon edges to target
- Kyle Schwarber (PHI) — lefty bat vs RHP, .150 against righties this year.
- TJ Rumfield (COL) — lefty bat vs RHP, .107 against righties this year.
- Rafael Devers (SF) — lefty bat vs RHP, .078 against righties this year.
- Bryce Eldridge (SF) — lefty bat vs RHP, .142 against righties this year.
- Geraldo Perdomo (AZ) — lefty bat vs RHP, .156 against righties this year.
Where walks come easiest today
Coors Field is playing as a real hitter's park today (+6% walk park). Top bat there: TJ Rumfield (COL) at 100.
How it played out
7 of the top 10 walks matchups landed at least one walk. Top play Kyle Schwarber finished with 0 walks. 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 walks matchups
Each score (0–100) starts with the hitter's walks 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 walks board is
The Walks board projects the chance a hitter draws a walk. 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 plate discipline.
- The pitcher's control.
- The count leverage in the matchup.
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?
An over-only market with heavy juice; our overs grade anti-predictive and lose to the vig. No edge — transparency board.
How to use it
Spot the patient-hitter-vs-wild-arm setups; not a bettable edge.
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