Toe the Slab

KC / Last 10 qualified starts

Stephen Kolek

Form through 2026-06-21

52

Even form / 9 of 10

ERA 4.15 · WHIP 1.19 · K/9 5.9 · IP 52.0 · FIP 4.10 · xERA 4.36

→Steady +0.0

Next start pending

Season form trend

Rolling GS+

204060802026-05-05 vs CLE: GS+ 52, 6.0 IP2026-05-12 vs CWS: GS+ 41, 4.2 IP2026-05-17 vs STL: GS+ 64, 6.1 IP2026-05-23 vs SEA: GS+ 68, 9.0 IP2026-05-29 vs TEX: GS+ 46, 5.0 IP2026-06-03 vs CIN: GS+ 62, 7.0 IP2026-06-09 vs TEX: GS+ 53, 5.0 IP2026-06-14 vs HOU: GS+ 66, 7.1 IP2026-06-21 vs STL: GS+ 20, 1.2 IPBestWorst05-0505-1705-2906-0906-21
Season form data
2026-05-0552
2026-05-1241
2026-05-1764
2026-05-2368
2026-05-2946
2026-06-0362
2026-06-0953
2026-06-1466
2026-06-2120

Arsenal / pitch mix

How he gets outs

fixture

PitchUsageVeloWhiffPut-awayxwOBA
4-Seam
40%
99.418%14%.337
Sliderout pitch
29%
91.132%20%.301
Changeup
15%
88.328%17%.313
Sinker
10%
97.210%10%.357
Curveball
6%
83.420%15%.331

Advanced / percentiles

Trust indicators

K% 15%

98th pct

BB% 2%

87th pct

Whiff% --

50th pct

Chase% --

50th pct

CSW% --

50th pct

Barrel% 7%

71th pct

Hard-hit% 31%

62th pct

xERA 4.36

32th pct

FIP 4.10

39th pct

GB% pending

50th pct

Splits

Scouting splits

Vs RHB

wOBA --

K --

BB --

Vs LHB

wOBA --

K --

BB --

Home

wOBA --

K --

BB --

Away

wOBA --

K --

BB --

Times through order

wOBA --

K --

BB --

GS+ game log

2026-06-21vs STL / MLB game log1.2 IP, 9 H, 9 ER, 1 BB, 0 KGS+ 20Depth

2026-06-21 / Poor

vs STL

1.2 IP, 9 H, 9 ER, 1 BB, 0 K

20

GS+

2%

Whiff

94.7

Top velo

Inning velo shape

88.7 mph89.7 mph
2026-06-14vs HOU / MLB game log7.1 IP, 5 H, 0 ER, 1 BB, 4 KGS+ 66Depth

2026-06-14 / Plus

vs HOU

7.1 IP, 5 H, 0 ER, 1 BB, 4 K

59

GS+

13%

Whiff

96.3

Top velo

Inning velo shape

92.8 mph91.7 mph89.6 mph89.8 mph85.8 mph89.9 mph90.3 mph85.6 mph
2026-06-09vs TEX / MLB game log5.0 IP, 8 H, 1 ER, 1 BB, 3 KGS+ 53Depth

2026-06-09 / Solid

vs TEX

5.0 IP, 8 H, 1 ER, 1 BB, 3 K

47

GS+

15%

Whiff

95.1

Top velo

Inning velo shape

87.2 mph90.2 mph89.3 mph88.6 mph89.3 mph
2026-06-03vs CIN / MLB game log7.0 IP, 6 H, 2 ER, 2 BB, 8 KGS+ 62Summary
2026-05-29vs TEX / MLB game log5.0 IP, 6 H, 4 ER, 1 BB, 5 KGS+ 46Summary
2026-05-23vs SEA / MLB game log9.0 IP, 4 H, 0 ER, 1 BB, 2 KGS+ 68Summary
2026-05-17vs STL / MLB game log6.1 IP, 4 H, 0 ER, 1 BB, 3 KGS+ 64Summary
2026-05-12vs CWS / MLB game log4.2 IP, 5 H, 5 ER, 3 BB, 6 KGS+ 41Summary
2026-05-05vs CLE / MLB game log6.0 IP, 4 H, 3 ER, 0 BB, 3 KGS+ 52Summary