BIGLEAGUE

Arizona Diamondbacks · Pitcher · #29

Merrill Kelly

Age 376' 2" · 210lbBats R · Throws RDebut 2019From Houston

ERA

5.35

W-L

8-12

K

88

WHIP

1.51

WAR

-0.8

FIP

5.80

Awards

2 major honors

All-Star

2014

NL Pitcher of the Month

2022

League Percentile

2026 season · percentile vs 54 qualified pitchers
the entire league54starting pitchers194
ERA
1
5.35
WHIP
1
1.51
Strikeouts
3
88
K/9
3
5.88
Wins
39
8
Bottom of leagueAverage (50)Top of league

the entire league · by ERA

Top 99%

Merrill Kelly's ERA (5.35) ranks below average among 54 qualified pitchers. The number on each bar is a percentile (higher is better); use the tabs to change the comparison pool.

PITCHING

Season · Career
CategoryGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2026 Season245.358120134.288601.51
Career1963.95736501143.09993601.23

Hover over a stat for its definition.

ARSENAL

Pitch arsenal · 2026 usage and average velocity
Four-Seam27.5%avg 148 km/h
Changeup27.4%avg 142 km/h
Cutter13.3%avg 146 km/h
Curveball11.6%avg 133 km/h
Slider10.4%avg 139 km/h
Sinker9.9%avg 149 km/h

ADVANCED

Advanced metrics · 2026 season

BABIP

.288

K/9

5.88

BB/9

4.01

HR/9

1.74

Quality starts

7

Whiff%

21.4%

GAME LOG

Last 10 games · includes team result
DateOppInningsHitsERWalksStrikeoutsTeam
08.24vs CHC5.25334L
08.18@ BOS4.07642L
08.12vs COL5.06632L
08.07vs LAD5.22144W
08.02@ CLE5.08545L
07.27@ PIT5.24016L
07.22vs ATH5.05213W
07.17vs STL5.04123L
07.09@ SD7.03136W
07.04vs MIL5.08226W

SPLITS

Situational splits (2026)

Home

Opp AVG.287
IP59.0
K45
WHIP1.58

Away

Opp AVG.270
IP75.2
K43
WHIP1.47

vs LHP

Opp AVG.285
IP76.2
K45
WHIP1.70

vs RHP

Opp AVG.267
IP55.2
K43
WHIP1.33

RISP

Opp AVG.259
IP32.1
K24
WHIP1.58

YEAR BY YEAR

Year-by-year · Career trends

ERALower is better

▲ Trending down year over year
ERA by yearFrom 4.42 in 2019 to 5.35 in 2026. Lower is better for this stat.2019 ERA: 4.424.4220192020 ERA: 2.592.5920202021 ERA: 4.4420212022 ERA: 3.3720222023 ERA: 3.2920232024 ERA: 4.0320242025 ERA: 3.5220252026 ERA: 5.355.352026
Show yearly figures
ERA year-by-year details
YearERA
20194.42
20202.59
20214.44
20223.37
20233.29
20244.03
20253.52
20265.35

WHIPLower is better

▲ Trending down year over year
WHIP by yearFrom 1.31 in 2019 to 1.51 in 2026. Lower is better for this stat.2019 WHIP: 1.311.3120192020 WHIP: 0.990.9920202021 WHIP: 1.2920212022 WHIP: 1.1420222023 WHIP: 1.1920232024 WHIP: 1.1720242025 WHIP: 1.1120252026 WHIP: 1.511.512026
Show yearly figures
WHIP year-by-year details
YearWHIP
20191.31
20200.99
20211.29
20221.14
20231.19
20241.17
20251.11
20261.51

Strikeouts

▼ Trending down year over year
Strikeouts by yearFrom 158 in 2019 to 88 in 2026.2019 Strikeouts: 15815820192020 Strikeouts: 292920202021 Strikeouts: 13020212022 Strikeouts: 17720222023 Strikeouts: 18718720232024 Strikeouts: 6320242025 Strikeouts: 16720252026 Strikeouts: 88882026
Show yearly figures
Strikeouts year-by-year details
YearStrikeouts
2019158
202029
2021130
2022177
2023187
202463
2025167
202688
YearTeamGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2019AZ324.4213140183.1158571.31
2020AZ52.5932031.12950.99
2021AZ274.447110158.0130411.29
2022AZ333.371380200.1177611.14
2023AZ303.291280177.2187691.19
2024AZ134.0351073.263191.17
2025AZ223.22960128.2121381.06
2025TEX104.2333055.146101.25
2025—323.521290184.0167481.11
2026AZ245.358120134.288601.51