Merrill Kelly

Pitcher · Career Stats, Bio & Records (2019-2026)

Active Player
W–L 74–65
ERA 3.93
WHIP 1.23
SO 1,006
Pitcher PIV 6429.2
Position
Pitcher
Bats / Throws
R / R
Height / Weight
6'2" / 202 lb
Born
10/14/1988 in Houston, TX, USA
MLB Debut
2019-04-01

Full name: Kenneth Merrill Kelly

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Career Pitching Statistics

W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
74 65 197 197 1 0 0 1150.0 1,053 502 156 364 1,006 3.93 6429.2

Career ERA 3.93 vs. league average 4.22 across their career seasons — 7.0% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
2019 ARI NL 13 14 32 32 0 0 0 183.3 184 90 57 158 4.42 4.51 (+2%) -33.1
2020 ARI NL 3 2 5 5 0 0 0 31.3 26 9 5 29 2.59 4.45 (+42%) 365.8
2021 ARI NL 7 11 27 27 0 0 0 158.0 163 78 41 130 4.44 4.27 (-4%) 647.6
2022 ARI NL 13 8 33 33 0 0 0 200.3 167 75 61 177 3.37 3.97 (+15%) 1652.0
2023 ARI NL 12 8 30 30 0 0 0 177.7 143 65 69 187 3.29 4.33 (+24%) 2236.1
2024 ARI NL 5 1 13 13 0 0 0 73.7 67 33 19 63 4.03 4.08 (+1%) -321.1
2025 ARI NL 9 6 22 22 0 0 0 128.7 98 46 38 121 3.22 4.16 (+23%) 1916.2
2025 TEX AL 3 3 10 10 0 0 0 55.3 59 26 10 46 4.23 4.16 (-2%) -34.4
2026 AZ NL 9 12 25 25 1 0 0 141.7 146 80 64 95 5.08 4.17 (-22%) -
Career · 9 seasons 74 65 197 197 1 0 0 1,150.0 1,053 502 364 1,006 3.93 — 6,429

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
172 99 4 4 1 0 0 3 0 6 52 .040 .095 .051 .146 -1,299

Career AVG .040 vs. league average .246 across their career seasons — 83.6% below league average.

Career OBP .095 vs. league average .317 across their career seasons — 69.9% below league average.

Career SLG .051 vs. league average .410 across their career seasons — 87.7% below league average.

Career OPS .146 vs. league average .727 across their career seasons — 80.0% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
2019 ARI NL 32 52 3 1 0 0 0 2 0 2 25 .019 .252 (-92%) .322 (-83%) .434 (-96%) .757 (-90%) -775.9
2020 ARI NL 5 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2021 ARI NL 27 47 1 3 1 0 0 1 0 4 27 .064 — — — — -523.3
2022 ARI NL 33 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2023 ARI NL 30 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2024 ARI NL 13 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2025 ARI NL 22 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
2025 TEX AL 10 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 8 seasons 172 99 4 4 1 0 0 3 0 6 52 .040 — — — — -1,299

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Postseason Statistics

Playoff Career Batting

G AB R H 2B 3B HR RBI BB SO AVG
4 0 0 0 0 0 0 0 0 0 .000

Playoff Batting by Year

Year Round Team G AB R H 2B 3B HR RBI BB SO AVG
2023 NLCS ARI 2 0 0 0 0 0 0 0 0 0 .000
2023 NLDS2 ARI 1 0 0 0 0 0 0 0 0 0 .000
2023 WS ARI 1 0 0 0 0 0 0 0 0 0 .000

Playoff Career Pitching

W L G GS SV IP H ER BB SO ERA
3 1 4 4 0 24.0 12 6 8 28 2.25

Playoff Pitching by Year

Year Round Team W L G GS SV IP H ER BB SO ERA
2023 NLCS ARI 1 1 2 2 0 10.7 6 5 6 14 4.22
2023 NLDS2 ARI 1 0 1 1 0 6.3 3 0 2 5 0.00
2023 WS ARI 1 0 1 1 0 7.0 3 1 0 9 1.29

Game Log & Splits

View full game log (344 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

SplitGABRHHRRBIAVG
Home87481303.062
Away85513100.020

Pitching — Home / Away

SplitGIPHERBBSOERA
Home87526.04541921475073.29
Away85482.14532301534044.29

Last 10 Games — Pitching

DateTmOppDecIPHRERBBSOHR
2025-09-21 TEXMIA L 4.1733040
2025-09-16 TEXHOU L 3.0966110
2025-09-10 TEXMIL W 5.21033062
2025-09-05 TEXHOU — 7.0511170
2025-08-30 TEXOAK W 6.1633022
2025-08-24 TEXCLE W 7.0400280
2025-08-19 TEXKCR — 6.0222032
2025-08-13 TEXAZ — 6.0722151
2025-08-08 TEXPHI L 4.1544542
2025-08-02 TEXSEA — 5.2422060

Fielding Statistics

Career Fielding Totals by Position

Position G GS PO A E DP
P 172 172 90 91 12 8

Season-by-Season Fielding

Year Team Pos G GS PO A E DP
2019 ARI P 32 32 21 14 4 2
2020 ARI P 5 5 7 3 0 0
2021 ARI P 27 27 13 16 0 2
2022 ARI P 33 33 15 19 1 2
2023 ARI P 30 30 12 12 2 2
2024 ARI P 13 13 9 5 2 0
2025 ARI P 22 22 8 15 2 0
2025 TEX P 10 10 5 7 1 0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Position Games
Pitcher 172

Awards & Honors

Year Award Notes
2022 Pitcher of the Month July
2022 Player of the Week Week of 2022-07-30

Most Similar Players

Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.

  1. 98
    Mat Latos
    71-59, 3.64 ERA
  2. 94
    Sandy Alcantara
    65-75, 3.62 ERA
  3. 82
    Luis Severino
    75-61, 3.93 ERA
  4. 80
    Shaun Marcum
    61-48, 3.93 ERA
  5. 73
    Pablo Lopez
    59-53, 3.81 ERA
  6. 69
    Joe Musgrove
    66-62, 3.73 ERA

Frequently Asked Questions about Merrill Kelly

What years did Merrill Kelly play?
Merrill Kelly played in Major League Baseball from 2019 to 2026.
Was Merrill Kelly a pitcher?
Yes. Merrill Kelly pitched in the major leagues, recording 74 wins and 1006 strikeouts.
How many home runs did Merrill Kelly hit?
Merrill Kelly hit 0 career home runs with 4 hits.