Zack Kelly stats

Last played for the Boston Red Sox, 2026

Relief Pitcher · #76

Age 31 · 6' 3"

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Zack Kelly played 5 MLB seasons, 2022 to 2026.

Stats

Choose how these numbers are shown

Standard

Career regular season

GP
115
W
8
L
8
ERA
4.04
IP
131.1
K
127
BB
58
WHIP
1.31
Standard by season
GP: Games the player appeared in, however briefly.W: Games in which this pitcher was credited with the win.L: Games in which this pitcher was charged with the loss.ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.K: Batters this pitcher struck out.BB: Times the batter reached first base on four balls.WHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.
2022BOS13103.9513.21141.32
2023BOS8003.869.1681.61
2024BOS49633.9756.261271.25
2025BOS28134.5835.135121.33
2026BOS17023.3116.11471.29

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

Career Postseason

GP
1
W
0
L
0
ERA
0.00
IP
0.1
K
1
BB
0
WHIP
0.00

Expanded

Career regular season

QS
0
CG
0
SHO
0
K/9
8.7
GB
173
FB
199
G/F
0.90
WP
5
Expanded by season
QS: Quality starts: six innings or more with no more than three earned runs.CG: Complete games, pitched from the first out to the last.SHO: Shutouts — complete games with no run allowed.K/9: Strikeouts for every nine innings pitched.GB: Ground balls hit against this pitcher.FB: Fly balls hit against this pitcher.G/F: Ground balls for every fly ball hit against this pitcher.WP: Wild pitches — throws the catcher had no chance to stop.
2022BOS0007.220240.80
2023BOS0005.814121.21
2024BOS0009.772790.92
2025BOS0008.944580.81
2026BOS0007.723260.91

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

Bio

Age
31 yearsMar 3, 1995
Height
6' 3"
Debut
2022
Birthplace
Roanoke, VA

Latest performance

Zack Kelly

May 19 · @ KC · W 7-1

IP
0.2
H
1
R
0
ER
0
BB
0
K
0
HR
0
ERA
3.31

Games

All games
Most recent games
DateOpponentIPHRERK
Tue, May 19atKCW 7-10.21000
Thu, May 14vsPHIL 3-10.22101
Tue, May 12vsPHIL 2-110001
Sun, May 10vsTBL 4-10.11110
Wed, May 06atDETW 4-010002
Sun, May 03vsHOUL 3-1 F/1011210

What were Zack Kelly's career stats?

Zack Kelly played 5 seasons for the Red Sox. He had 8 wins and 127 strikeouts with a 4.04 ERA over 131.1 innings. His best season was 2024: 6 wins, a 3.97 ERA and 61 strikeouts.

More on Zack Kelly

Playoff series

Zack Kelly played 1 game across 1 MLB postseason in one series — 0 won, 1 lost.

Zack Kelly's line in each playoff series
SeasonOppSeriesGIPIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.HH: Times the batter reached base by hitting the ball, without help from an error.ERER: Earned runs allowed — runs that scored without help from an error.KK: Batters this pitcher struck out.
2025NYYLost 0-110.1001

What the columns mean: IP · H · ER · K

Totals, from MLB game logs since the 2001 postseason — earlier series are not counted.