William Kempner stats

Marlins

Relief Pitcher · #71

Age 25 · 6' 0" · 222 lbs

Compare with…

OutRight Elbow · due back September 1, 2027

William Kempner recorded 1 win, a 2.92 ERA and 14 strikeouts in 9 games of 2026 for the Miami Marlins. Last game: .

Stats

Choose how these numbers are shown

Standard

GP
9
W
1
L
0
ERA
2.92
IP
12.1
K
14
BB
4
WHIP
0.97
Standard by season
SeasonTeamGPGP: Games the player appeared in, however briefly.WW: Games in which this pitcher was credited with the win.LL: Games in which this pitcher was charged with the loss.ERAERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.IPIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.KK: Batters this pitcher struck out.BBBB: Times the batter reached first base on four balls.WHIPWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.
2026MIA910, led the MLB2.9212.11440.97

What the columns mean: W · L · ERA · IP · K · BB · WHIP

Bold marks the best figure in the MLB that season, among players with at least 30 games.

Career regular season

GP
9
W
1
L
0
ERA
2.92
IP
12.1
K
14
BB
4
WHIP
0.97

Expanded

QS
0
CG
0
SHO
0
K/9
10.2
GB
9
FB
21
G/F
0.40
WP
0
Expanded by season
SeasonTeamQSQS: Quality starts: six innings or more with no more than three earned runs.CGCG: Complete games, pitched from the first out to the last.SHOSHO: Shutouts — complete games with no run allowed.K/9K/9: Strikeouts for every nine innings pitched.GBGB: Ground balls hit against this pitcher.FBFB: Fly balls hit against this pitcher.G/FG/F: Ground balls for every fly ball hit against this pitcher.WPWP: Wild pitches — throws the catcher had no chance to stop.
2026MIA00010.29210.40

What the columns mean: QS · CG · SHO · K/9 · G/F · WP

Career regular season

QS
0
CG
0
SHO
0
K/9
10.2
GB
9
FB
21
G/F
0.40
WP
0

Bio

Age
25 yearsJun 18, 2001
Height
6' 0"
Weight
222 lbs
Experience
1 yearDebut 2026
Birthplace
San Jose, CA

Latest performance

William Kempner

Jul 11 · vs CLE · L 4-1

IP
2.0
H
3
R
2
ER
2
BB
0
K
3
HR
0
ERA
2.92

Games

All games
Most recent games
DateOpponentIPHRERK
Sat, Jul 11vsCLEL 4-123223
Thu, Jul 09vsSEAW 8-40.12220
Fri, Jul 03atATHW 12-510001
Mon, Jun 15atPHIL 7-02.10002
Wed, Jun 10vsARIW 8-020003
Fri, Jun 05vsTBL 6-01.11001

What are William Kempner's career stats?

William Kempner has played 1 season for the Marlins. He has 1 win and 14 strikeouts with a 2.92 ERA over 12.1 innings. His best season so far is 2026: 1 win, a 2.92 ERA and 14 strikeouts.

More on William Kempner