Jack Perkins

OAK · Starting pitcher · 1 starts projected since Sep 20, 2026, every one frozen before first pitch.

Next start · Sep 26 · 8:40 PM CT

Jack PerkinsRHP · OAK vs HOU

4.6projected strikeouts · likely 2 to 7 · 21.0 batters over 4.9 innings

Over 4.5: 49% (red bars) · under: 51%. Chance of each exact strikeout total, from the served distribution.

K%23.7%

BB%10.7%

Whiff%11.1%

Velo90.9

BTB Stuff99

Location102

PitchUsageBTB Stuff 60 · 100 · 140VeloWhiff

Sweeper25%10886.416.3%

Fastball24%9595.37.4%

Changeup21%9389.315.1%

Cutter19%10492.77.5%

Sinker7%9294.87.1%

Slider3%9984.93.1%

Other1%––0.0%

Last 3 startsTrending Up

Date	Pitches	K%	Whiff%	Hard-hit%	wOBA
Sep 20	80	18%	10%	23%	.231
Sep 15	83	33%	8%	25%	.194
Sep 8	85	14%	9%	29%	.405

Season numbers from the last 90 days of Statcast. BTB Stuff and Location read on a scale where 100 is league average. Recent starts are context; the projection doesn't weight them.

The gameHOU @ OAK →Sutter Health Park

The arsenal by shape

how each pitch moves

Movement in inches, from the pitch-level data. Hitter matchup pages read each hitter against pitches shaped like these.
Pitch	Family	Usage	Velo	Horizontal break	Induced vertical break
Sweeper	Breaking	25%	86.4	-11.9″	+1.6″
Fastball	Hard	24%	95.4	+9.8″	+14.8″
Changeup	Offspeed	21%	89.3	+12.6″	+0.2″
Cutter	Hard	19%	92.7	+1.0″	+7.7″
Sinker	Hard	7%	94.7	+15.7″	+8.9″

The lineup he faces

Jack Perkins OAK · RHPvsHOU lineupstrikeout rate vs his hand

5 of 9 strike out more than the average hitter tonight

1Jeremy Peña29%

2Yordan Alvarez18%

3Isaac Paredes11%

4Jose Altuve19%

5Yainer Diaz15%

6Christian Walker27%

7Cam Smith26%

8Lucas Spence28%

9Christian Vázquez27%

Strikeout rate against right-handers over the last 90 days (season rate where the split is missing). Line: tonight's average hitter, 21.6%. Red strikes out more, blue less.

Two strikes

how he finishes hitters

Jack Perkins OAK · RHPwith two strikes

Usage, overall to two strikesOverall Two strikes

Sweeper+5 pts

Fastball+5 pts

Changeup+6 pts

Slider+4 pts

Cutter-14 pts

Sinker-5 pts

Other-1 pts

Jack Perkins with two strikes. Put-away: share of two-strike pitches that end the at-bat with a strikeout.
Pitch	Overall	2 strikes	Whiff%	Put-away	League put-away
Sweeper	25%	30%	25.8%	26.3%	19.3%
Fastball	24%	29%	19.1%	16.7%	18.0%
Changeup	21%	27%	31.4%	25.3%	18.6%
Slider	3%	6%	10.0%	20.0%	21.0%
Cutter	19%	5%	15.4%	18.8%	17.9%
Sinker	7%	3%	0.0%	12.5%	16.9%
Other	1%	0%	–	0.0%	21.7%

Predicted vs what happened

Strikeouts4BTB expected 4.4 over 1 starts

BTB's side at the line1 of 1over or under the book's line

A few starts say little about the model; the market-level record is on the record.

Projection as served and frozen before first pitch; book probability de-vigged at the open.
Date	Opponent	Projected K	Book line	BTB over	Book over	Strikeouts
Sep 20	CLE	4.4	3.5	62.7%	57.7%	4