Stephen Kolek
32
Kansas City Royals#32 · SP

Stephen Kolek

Age 29
Contract Value $786,806/yr
Size 6' 3" · 210
Throws RHP
Bats Right
From Houston, TX
4–3
W-L
4.50
ERA
1.24
WHIP
34
K
54.0
IP
10
GS
37P-ScoreWEAK

Strong consistency with strikeouts & control still trailing the rest of the profile. He ranks 190th among 224 qualified starters.

How P-Score works
Stats updated Sep 7, 11:34 AM ETLast game Jul 2 vs TB
Next start
No probable start has been announced.

Season overview

ERA
4.50137th
WHIP
1.2480th
K/9
5.7214th
BB/9
2.014th
FIP
4.54139th
HR/9
1.3141st
IP/start
5.4140th
WAR
0.5150th
How good is he?
StatPlayerMLB AvgPercentile
Results5350
AVERAGE
Strikeouts & Control2250
POOR
Run Prevention5850
AVERAGE
Consistency6650
ABOVE AVG
Form4650
BELOW AVG

Recent form

Last 5 starts
ERA
5.874.50
▲ 1.37
K/9
5.95.7
▲ 0.2
BB/9
2.32.0
▲ 0.3
IP/start
4.65.4
▼ 0.8
Pitches/start
7684
▼ 8
·ERA rose by 1.37 over the last five starts.
·Walk rate rose from 2.0 to 2.3 BB/9.
·Innings per start fell from 5.4 to 4.6.

Pitch arsenal (2026)

Usage %Velocity
  • Four-seam FB28.3%94.3 mph
  • Sinker21.7%93.7 mph
  • Slider16.4%85.6 mph
  • Cutter12.3%90.3 mph
  • Changeup11.9%87.1 mph
  • Sweeper9.3%79.9 mph

Hot / cold zones (vs RHB)

.250.385.000.238.414.455.231.353.190
  • Better than MLB avg
  • Similar to MLB avg
  • Worse than MLB avg

Monthly ERA (2026)

Minimum 1 GS

Splits

Home / away
Home (6 GS)
4.65
WHIP 1.26
Away (4 GS)
4.30
WHIP 1.22
0.35 ERA better on the road
vs handedness
vs LHH
.757
vs RHH
.754
.003 OPS better vs RHH
By monthERA · IP · K
July13.502.00
June5.1421.015
May3.4831.019
Rest daysERA · WHIP · K/9
6+ days (6 GS)7.241.615.3
Sample sizes below four starts are not shown

Career

YearTeamW-LERAIPKWHIPFIPWAR
2026KCKansas City Royals4–34.5054.0341.244.540.5

Frequently asked

What is Stephen Kolek's ERA in 2026?+
4.50 across 10 starts and 54.0 innings, with a 1.24 WHIP and a 4.54 FIP. That ERA ranks 137th among qualified starters.
When is his next start?+
No probable start has been announced.
What pitches does he throw?+
He throws four-seam fb (28.3% at 94.3 mph mph), sinker (21.7% at 93.7 mph mph), slider (16.4% at 85.6 mph mph), cutter (12.3% at 90.3 mph mph), changeup (11.9% at 87.1 mph mph), sweeper (9.3% at 79.9 mph mph).
What is his P-Score?+
37 out of 100, which we label weak — 190th among 224 qualified starters.
How has he pitched in his last 5 starts?+
A 5.87 ERA, 5.9 K/9, 2.3 BB/9.
Stephen Kolek Stats 2026: ERA, Game Log, Splits & Next Start | PitcherStat