Tommy Kahnle

2026

Red Sox· RHP · throws R· 9.0 IP· 8.00 ERA· 2.00 WHIP· 43 BF

Grade

How good he's been, and at what

F11th percentile run prevention

RelieverHittable Strike-Thrower

Pounds the zone, but too much of it gets hit hard.

Kahnle is getting hit harder than most pitchers

The simulator expects 0.516 bases allowed per batter faced against him — better than 11th percentile of qualified pitchers. The soft spot is HR Suppression (1st percentile). Short relief stints inflate strikeout rates a touch, so read the Strikeouts spoke with that in mind.

Each spoke is a skill estimate adjusted for sample size (not raw season stats), so farther out = better.
Percentiles vs. 424 qualified pitchers — 100+ batters faced, starters and relievers pooled. He hasn't reached that bar himself, so he is measured against them rather than counted among them.
43 batters faced · data through 2026-07-29.

Plays like…

Same archetype, nearest by rate — the pitchers whose profile looks most like this one.

Miles MikolasNationals

Jake IrvinNationals

Hunter BarcoPirates

Brayan BelloRed Sox

Pitcher type

What kind of pitcher he is, next to the league

Arsenal

What he throws, and what it does

Tommy Kahnle leans on his changeup (63% of pitches). No pitch has beaten league-average results yet — the four-seam fastball has come closest.

Pitch mix & swing-and-miss

What they throw, how hard, and what misses bats — from pitch tracking, regular season only.

−1 bases worse than a replacement arm this season

allowed 23 bases vs a replacement arm's 22 over the same batters faced

Results

All pitches

cost 2.5 per 1003.9 cost across 157

Changeup

63% −22 pts vs '25

88.2 mph · lg 87.2 +1.5 mph vs '25

19% whiffs · lg 29%

cost 2.9 per 1003.1 cost across 106

Four-Seam Fastball

30% +16 pts vs '25

93.6 mph · lg 95.1 +0.1 mph vs '25

—

cost 1.5 per 1000.8 cost across 51

Slider

7% +6 pts vs '25

84.7 mph · lg 86.9 −1.6 mph vs '25

—

Mix by batter side

How the mix shifts against lefty and righty bats. Overall results by batter side are under Platoon splits.

Changeup

64% vs LHH

61% vs RHH

By appearance

How the stuff has held up outing to outing

One point per outing — how his velocity, movement, and pitch mix have moved across the season, with league context for scale. Each pitch keeps the same color in every chart.

Platoon splits

How he fares against lefties and righties

Platoon splits (EB/PA allowed)

Dot = shrunk true-talent estimate; bar = 50% probable range. Tap or hover any mark for its number, or tab to a row for all of them.
Faint diamond = his raw, unshrunk rate against that side — small samples make it noisy, which is why the model pulls the dot toward a more trustworthy estimate.
These are bases allowed, so lower is better. Weighted by how often he faces each side, the two splits average back to his modeled overall EB/PA allowed — not the xEB/PA headline at the top of the page, which folds in strikeouts and walks differently.
Gray tick (marked “lg”) = league median vs that side; the faint gray band behind it spans the middle half of the league (25th–75th percentile).
Shrunk splits beat raw splits on held-out seasons, most decisively at low batters-faced counts (relievers especially), and converge with the raw numbers as exposure builds.

vs LHB24 PA0.538

Raw vs LHB rate (0.632) is off this scale — small samples like this are exactly why the shrunk estimate (the dot) is the trustworthy number, not the raw one.

vs RHB19 PA0.496

0.3870.4350.4830.5320.580

← better (fewer bases allowed)worse →

Better vs RHB than vs LHB by 0.042 EB/PA allowed (modeled).

50% probable range: +0.033 to +0.049

About the typical split for a righty arm (median 0.041). He allows more than the league median against both sides.

Contact allowed

What hitters do when they connect

Batters go to the pull side off him most often, and that's where the hardest contact comes from.

Pull and oppo are relative to each batter's stance, so this pools all the hitters he faced.

Batted balls allowed

Where every ball hit off Tommy Kahnle landed this season.
Dots are colored by estimated bases (EB) — pale slate (easy out) to dark teal (home-run territory).
Filled dots are hits; hollow rings are outs — a dark ring in the outfield is a crushed ball his defense ran down.
Tap or hover a dot or a row to link the two; use the ▶ links below to watch on Baseball Savant.

hit · out

EBlowhigh

vs CJ AbramsHome run

EV 104 mph · LA 23° · EB 2.6

06/30 vs Nationals

vs James WoodDouble

EV 107 mph · LA 17° · EB 1.8

06/30 vs Nationals

vs Colton CowserSingle

EV 102 mph · LA 18° · EB 1.8

06/04 vs Orioles

vs Keibert RuizDouble

EV 101 mph · LA 21° · EB 1.7

06/30 vs Nationals

vs Anthony VolpeDouble

EV 107 mph · LA 18° · EB 1.4

06/26 vs Yankees

Luck check

Burned once — a ball with a hit probability under 20% that found grass anyway.

vs Davis SchneiderDoubleCheap hit

EV 99 mph · LA 37° · EB 0.2 · xBA .111

06/16 vs Blue Jays

Best games

His biggest outings this year

Best games

His best outings this season by bases saved vs a replacement arm.

Date	Opponent	Result	Bases allowed	Above replacement
Jun 12, 2026	Rangers	3 BF · 1 K	0.1	+1.5
Jun 16, 2026	Blue Jays	6 BF · 0 K, 1 BB, 2 H	2.1	+0.9
Jun 14, 2026	Rangers	4 BF · 1 K, 1 BB	1.3	+0.7
Jun 9, 2026	Rays	4 BF · 1 K, 2 H	1.4	+0.7
Jun 19, 2026	Mariners	5 BF · 1 K, 1 BB, 1 H, 1 HR	2.5	+0.0