Arizona Diamondbacks

Merrill Kelly

Starting Pitcher#29

Key facts

Age: 38
Height: 1.88 m
Weight: 95 kg
Number: #29
Born: 14/10/1988
Birthplace: Houston, TX
Debut: 2019
Position: Starting Pitcher
College: Arizona State
Experience: 8th Season
Draft: 2010: Rd 8, Pk 251 (TB)

Official profile

ESPN player page ↗

Career stats

pitching

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	GP	GS	W	L	W%	WAR	ERA	WHIP	IP	K	BB	K/BB	H	R	ER
2019 ARI	32	32	13	14	.481	1.4	4.42	1.31	183.1	158	57	2.8	184	95	90
2020 ARI	5	5	3	2	.600	1.4	2.59	0.99	31.1	29	5	5.8	26	9	9
2021 ARI	27	27	7	11	.389	2.4	4.44	1.29	158.0	130	41	3.2	163	82	78
2022 ARI	33	33	13	8	.619	3.5	3.37	1.14	200.1	177	61	2.9	167	77	75
2023 ARI	30	30	12	8	.600	3.9	3.29	1.19	177.2	187	69	2.7	143	71	65
2024 ARI	13	13	5	1	.833	1.0	4.03	1.17	73.2	63	19	3.3	67	35	33
2025 ARI	22	22	9	6	.600	2.9	3.22	1.06	128.2	121	38	3.2	98	53	46
2025 TEX	10	10	3	3	.500	-0.1	4.23	1.25	55.1	46	10	4.6	59	26	26

Postseason Pitching

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	GP	GS	W	L	W%	WAR	ERA	WHIP	IP	K	BB	K/BB	H	R	ER	SV	HLD	BLSV
2023 ARI	4	4	3	1	.750	0.0	2.25	0.83	24.0	28	8	3.5	12	6	6	0	0	0
Career	4	4	3	1	.750	0.0	2.25	0.83	24.0	28	8	3.5	12	6	6	0	0	0

Opponent Batting

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	P	TBF	P-TBF	OBA	OOBP	OSLUG	OOPS	2B	3B	HR	TB	RBI	BH	SH	SF	IBB
2019 ARI	2962	777	3.812	.260	.314	.447	.761	38	4	29	317	90	2	2	5	4
2020 ARI	473	125	3.784	.218	.256	.395	.651	6	0	5	47	9	1	0	0	1
2021 ARI	2425	667	3.636	.266	.315	.433	.748	31	4	21	265	74	4	6	4	3
2022 ARI	3071	804	3.820	.226	.286	.371	.657	40	2	21	274	69	2	1	1	2
2023 ARI	2803	722	3.882	.222	.300	.371	.670	30	3	20	239	63	4	1	3	0
2024 ARI	1142	300	3.807	.242	.294	.426	.720	16	1	11	118	32	2	0	1	0
2025 ARI	2009	514	3.909	.206	.267	.358	.624	24

Expanded Pitching

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	P/S	P/I	K/9	QS	CG	SHO	GSC	GB	FB	G/F	IR	IRS	WP	BK	SB	CS	RSUP
2019 ARI	92.6	16.2	7.8	15	0	0	50.8	241	317	0.8	0	0	4	0	3	2	135.0
2020 ARI	94.6	15.1	8.3	4	0	0	60.0	41	49	0.8	0	0	0	0	3	0	13.0
2021 ARI	89.8	15.3	7.4	10	0	0	50.4	220	272	0.8	0	0	2	0	9	4	120.0
2022 ARI	93.1	15.3	8.0	18	0	0	56.5	247	317	0.8	0	0	4	1	15	5	138.0
2023 ARI	93.4	15.8	9.5	18	0	0	56.8	211	251	0.8	0	0	3	4	13	4	117.0
2024 ARI	87.8	15.5	7.7	5	0	0	52.7	92	123	0.7	0	0	1	2	5	2	75.0
2025 ARI	91.3	15.6

Compare KellyStack them up against anyone, with an analyst verdict

Every game we hold

Includes finals, playoffs and exhibition games, so totals run higher than regular-season figures.

Season
2026 MLBArizona Diamondbacks	29	0	0	0	0	0	0	0	113	70	166	89	0	28	162.0	486	2,621	93	1,656
2025 MLBArizona Diamondbacks / Texas Rangers	32	–	–	–	–	–	–	–	167	48	157	72	–	23	184	552	2,833	79	1,861
2024 MLBArizona Diamondbacks	13	–	–	–	–	–	–	–	63	19	67	33	–	11	73.7	221	1,142	35	742
2023 MLBArizona Diamondbacks	34	–	–	–	–	–	–	–	215	77	155	71	–	24	201.7	605	3,160	77	2,044
2022 MLBArizona Diamondbacks	33	–	–	–	–	–	–	–	177	61	167	75	–	21	200.3	601	3,071	77	2,011
2021 MLBArizona Diamondbacks	6	0	0	0	0	0	13	5	24	9	39	21	45	5	32.7	98	539	22	351
2020 MLBArizona Diamondbacks	5	–	–	–	–	–	–	–	29	5	26	9	–	5	31.3	94	473	9	308
2019 MLBArizona Diamondbacks	32	0	2	1	3	2	52	25	158	57	184	90	206	29	183.3	550	2,962	95	1,898
Career8 seasons	184	0	2	1	3	2	65	30	946	346	961	460	251	146	1069.0	3,207	16,801	487	10,871

Game log, 2026 MLB

Game
24 Sept @ Colorado RockiesW 5-3 24 Sept	–	–	–	–	–	–	–	2	1	4	2	–	0	5.3	16	78	2	54
17 Sept v Miami MarlinsL 3-4 17 Sept	–	–	–	–	–	–	–	9	2	7	3	–	1	4.7	14	91	4	61
12 Sept v Texas RangersW 9-1 12 Sept	–	–	–	–	–	–	–	3	3	2	1	–	0	4.3	13	80	1	48
5 Sept @ Houston AstrosL 1-3 5 Sept	–	–	–	–	–	–	–	4	0	7	3	–	1	6	18	94	3	64
30 Aug @ San Francisco GiantsW 7-1 30 Aug	0	0	0	0	0	0	0	7	4	2	0	0	0	7	21	100	0	66
25 Aug v Chicago CubsL 0-7 25 Aug	–	–	–	–	–	–	–	4	3	5	3	–	0	5.7	17	99	3	60
19 Aug @ Boston Red SoxL 4-9 19 Aug	–	–	–	–	–	–	–	2	4	7	6	–	1	4	12	86	6	53
13 Aug v Colorado RockiesL 4-6 13 Aug	–	–	–	–	–	–	–	2	3	6	6	–	2	5	15	71	6	42
8 Aug v Los Angeles DodgersW 4-3 8 Aug	–	–	–	–	–	–	–	4	4	2	1	–	0	5.7	17	80	1	49
3 Aug @ Cleveland GuardiansL 0-5 3 Aug	–	–	–	–	–	–	–	5	4	8	5	–	1	5	15	96	5	56
28 July @ Pittsburgh PiratesL 2-3 28 July	–	–	–	–	–	–	–	6	1	4	0	–	0	5.7	17	93	1	61
23 July v AthleticsW 15-5 23 July	–	–	–	–	–	–	–	3	1	5	2	–	1	5	15	87	2	52
18 July v St. Louis CardinalsL 4-5 18 July	–	–	–	–	–	–	–	3	2	4	1	–	1	5	15	87	3	60
10 July @ San Diego PadresW 3-1 10 July	–	–	–	–	–	–	–	6	3	3	1	–	1	7	21	94	1	55
Rd 27 v Milwaukee BrewersW 4-3 5 July	–	–	–	–	–	–	–	6	2	8	2	–	1	5	15	92	2	57
Rd 26 @ Tampa Bay RaysL 1-5 29 June	–	–	–	–	–	–	–	3	2	8	5	–	3	6	18	93	5	64
Rd 25 @ St. Louis CardinalsL 2-3 23 June	–	–	–	–	–	–	–	2	3	7	3	–	0	6	18	96	3	64
Rd 24 v Los Angeles AngelsL 0-7 17 June	–	–	–	–	–	–	–	4	1	11	6	–	2	5.3	16	88	6	56
Rd 24 @ Miami MarlinsL 0-2 12 June	–	–	–	–	–	–	–	1	2	4	2	–	0	6	18	74	2	48
Rd 23 v Washington NationalsL 1-14 6 June	–	–	–	–	–	–	–	4	3	6	7	–	3	5	15	85	7	51
Rd 22 @ Seattle MarinersL 2-3 1 June	–	–	–	–	–	–	–	2	2	8	2	–	2	5.3	16	97	2	66
Rd 21 @ San Francisco GiantsW 6-2 26 May	–	–	–	–	–	–	–	4	2	4	2	–	0	7	21	96	2	64
Rd 20 v San Francisco GiantsW 6-3 21 May	–	–	–	–	–	–	–	4	0	8	3	–	1	6	18	85	3	56
Rd 20 @ Colorado RockiesW 9-1 16 May	–	–	–	–	–	–	–	3	0	4	1	–	1	9	27	100	1	73
Rd 19 v New York MetsW 2-1 10 May	–	–	–	–	–	–	–	6	3	3	1	–	0	7	21	96	1	58
Rd 18 @ Chicago CubsL 4-8 4 May	–	–	–	–	–	–	–	5	3	8	6	–	1	4.3	13	92	6	58
Rd 17 @ Milwaukee BrewersL 2-13 29 Apr	–	–	–	–	–	–	–	1	5	6	5	–	1	5	15	104	5	58
Rd 16 v Chicago White SoxL 5-11 22 Apr	–	–	–	–	–	–	–	5	3	10	8	–	3	4.3	13	101	8	56
Rd 15 @ Baltimore OriolesW 4-3 15 Apr	–	–	–	–	–	–	–	3	4	5	2	–	1	5.3	16	86	2	46

Recent games

Stats from official league and public sports feeds. Updated hourly.

Splits, MLB

Split
AwayHome or away · won 48 of 95	95	0.0	0.0	0.0	0.0	0.0	0.4	0.2	4.6	1.9	5.2	2.7	1.4	0.8	5.8	17.3	90.8	2.8	58.5
HomeHome or away · won 43 of 89	89	0.0	0.0	0.0	0.0	0.0	0.3	0.1	5.7	1.8	5.2	2.3	1.3	0.8	5.9	17.6	91.8	2.4	59.7
LossesResult	93	0.0	0.0	0.0	0.0	0.0	0.3	0.1	4.6	2.0	6.1	3.5	1.1	1.1	5.4	16.3	90.6	3.8	58.6
WinsResult	91	0.0	0.0	0.0	0.0	0.0	0.4	0.2	5.7	1.8	4.3	1.4	1.6	0.5	6.2	18.6	92.0	1.5	59.5
Regular seasonStage · won 91 of 184	184	0.0	0.0	0.0	0.0	0.0	0.4	0.2	5.1	1.9	5.2	2.5	1.4	0.8	5.8	17.4	91.3	2.6	59.1
Colorado RockiesOpponent · won 12 of 19	19	0.0	0.0	0.0	0.1	0.0	0.5	0.3	5.7	1.4	5.6	2.4	1.8	0.8	6.4	19.3	91.8	2.6	61.5
San Diego PadresOpponent · won 9 of 18	18	0.0	0.0	0.0	0.0	0.1	0.7	0.3	5.4	2.0	4.7	2.2	2.8	0.8	5.6	16.9	91.3	2.2	58.2
San Francisco GiantsOpponent · won 11 of 18	18	0.0	0.0	0.0	0.0	0.0	0.4	0.1	5.2	1.7	5.3	2.1	1.4	0.6	6.3	18.9	94.9	2.2	60.9
Los Angeles DodgersOpponent · won 4 of 15	15	0.0	0.0	0.0	0.0	0.0	0.1	0.1	3.8	2.6	6.1	3.0	0.5	0.8	5.2	15.5	86.1	3.3	54.3
Milwaukee BrewersOpponent · won 6 of 10	10	0.0	0.0	0.0	0.0	0.0	0.3	0.0	5.8	1.8	4.9	2.2	0.7	0.7	5.8	17.4	91.9	2.2	59.7
St. Louis CardinalsOpponent · won 5 of 10	10	0.0	0.0	0.0	0.0	0.0	0.4	0.2	4.6	2.0	5.1	2.1	1.3	0.4	5.9	17.7	94.0	2.6	60.8
Chicago CubsOpponent · won 3 of 8	8	0.0	0.0	0.0	0.0	0.0	0.1	0.0	4.1	3.5	4.5	2.4	0.3	0.3	5.0	15.1	94.8	2.4	56.8
Miami MarlinsOpponent · won 1 of 8	8	0.0	0.0	0.0	0.0	0.0	0.3	0.3	5.5	1.4	5.6	3.3	0.9	0.8	5.4	16.1	87.3	3.6	57.3
Philadelphia PhilliesOpponent · won 3 of 8	8	0.0	0.0	0.0	0.1	0.1	0.5	0.4	4.8	2.3	4.0	2.3	3.3	0.9	5.6	16.8	87.1	2.4	55.6
Pittsburgh PiratesOpponent · won 4 of 6	6	0.0	0.0	0.0	0.2	0.0	0.3	0.2	4.3	2.2	4.7	1.7	1.5	0.5	5.7	17.2	96.2	2.3	60.7
Atlanta BravesOpponent · won 2 of 5	5	0.0	0.0	0.0	0.0	0.0	0.4	0.0	6.6	1.4	4.2	1.4	0.8	1.0	6.8	20.4	95.0	1.4	64.2
Cincinnati RedsOpponent · won 4 of 5	5	0.0	0.0	0.0	0.0	0.0	0.6	0.2	6.4	1.6	3.6	1.6	1.8	0.2	6.2	18.6	90.0	1.6	59.8
Houston AstrosOpponent · won 2 of 5	5	–	–	–	–	–	–	–	4.6	1.2	5.8	2.2	–	0.2	5.7	17.0	83.2	2.2	56.0
New York MetsOpponent · won 2 of 5	5	0.0	0.0	0.0	0.0	0.0	1.0	1.0	6.8	1.8	5.6	3.0	4.4	1.0	6.4	19.2	98.8	3.0	64.2
Washington NationalsOpponent · won 3 of 5	5	0.0	0.0	0.0	0.0	0.0	0.8	0.0	6.0	1.6	6.2	3.8	3.0	1.6	5.8	17.4	89.6	4.2	57.8
Boston Red SoxOpponent · won 2 of 4	4	0.0	0.0	0.0	0.0	0.0	0.3	0.0	6.5	2.3	5.5	3.0	1.0	1.0	6.1	18.3	97.3	3.0	62.3
New York YankeesOpponent · won 1 of 4	4	0.0	0.0	0.0	0.0	0.0	0.5	0.5	3.3	2.0	5.8	3.5	2.3	1.5	5.3	15.8	89.3	3.5	58.0
Seattle MarinersOpponent · won 2 of 4	4	–	–	–	–	–	–	–	5.3	1.5	5.8	1.8	–	0.8	5.5	16.5	87.0	1.8	58.8
Texas RangersOpponent · won 4 of 4	4	–	–	–	–	–	–	–	5.5	1.5	3.0	1.5	–	0.8	5.8	17.3	85.3	1.5	57.0
Baltimore OriolesOpponent · won 2 of 3	3	0.0	0.7	0.3	0.0	0.0	0.3	0.0	3.7	2.0	5.3	3.7	2.0	1.3	4.6	13.7	79.3	4.0	49.7
Tampa Bay RaysOpponent · won 0 of 3	3	–	–	–	–	–	–	–	3.0	2.3	7.7	6.0	–	1.7	5.0	15.0	94.3	6.0	59.7
AthleticsOpponent · won 2 of 2	2	–	–	–	–	–	–	–	2.5	0.5	5.5	2.5	–	1.5	5.7	17.0	83.0	2.5	55.0
Chicago White SoxOpponent · won 1 of 2	2	–	–	–	–	–	–	–	6.0	2.0	7.5	6.0	–	2.0	5.8	17.5	100	6.0	62.0
Cleveland GuardiansOpponent · won 1 of 2	2	–	–	–	–	–	–	–	6.5	3.0	6.0	2.5	–	0.5	6.0	18.0	96.0	2.5	61.5
Detroit TigersOpponent · won 1 of 2	2	–	–	–	–	–	–	–	5.0	1.5	7.0	3.5	–	1.0	6.2	18.5	95.5	3.5	65.5
Los Angeles AngelsOpponent · won 1 of 2	2	–	–	–	–	–	–	–	5.0	2.5	6.0	3.5	–	1.0	5.2	15.5	93.0	3.5	57.0
Minnesota TwinsOpponent · won 1 of 2	2	–	–	–	–	–	–	–	7.0	0.5	5.5	1.5	–	1.0	6.5	19.5	94.5	1.5	64.5
Oakland AthleticsOpponent · won 1 of 2	2	–	–	–	–	–	–	–	8.0	1.5	4.5	2.5	–	1.0	6.0	18.0	98.0	3.0	66.0
Arizona DiamondbacksOpponent · won 0 of 1	1	–	–	–	–	–	–	–	5.0	1.0	7.0	2.0	–	1.0	6.0	18.0	99.0	2.0	65.0
Kansas City RoyalsOpponent · won 0 of 1	1	–	–	–	–	–	–	–	3.0	0.0	2.0	2.0	–	2.0	6.0	18.0	71.0	2.0	50.0
Toronto Blue JaysOpponent · won 1 of 1	1	–	–	–	–	–	–	–	3.0	2.0	3.0	1.0	–	1.0	7.0	21.0	95.0	1.0	58.0
Chase Field, PhoenixGround · won 40 of 83	83	0.0	0.0	0.0	0.0	0.0	0.4	0.1	5.7	1.9	5.1	2.3	1.4	0.8	5.9	17.6	91.9	2.5	59.5
Coors Field, DenverGround · won 7 of 11	11	0.0	0.0	0.0	0.1	0.0	0.5	0.4	4.6	1.4	5.7	2.5	1.9	0.9	6.3	18.8	93.3	2.8	62.0
Petco Park, San DiegoGround · won 6 of 10	10	0.0	0.0	0.0	0.0	0.1	0.6	0.5	4.3	2.0	4.4	2.1	2.8	1.1	5.7	17.1	89.5	2.1	55.9
Oracle Park, San FranciscoGround · won 4 of 9	9	0.0	0.0	0.0	0.0	0.0	0.2	0.0	4.9	1.7	6.1	2.6	0.7	0.6	6.3	18.9	94.7	2.8	61.3
Globe Life Field, ArlingtonGround · won 5 of 8	8	–	–	–	–	–	–	–	6.3	1.3	5.5	1.9	–	0.9	6.1	18.4	92.8	1.9	63.3
Dodger Stadium, Los AngelesGround · won 2 of 6	6	0.0	0.0	0.0	0.0	0.0	0.3	0.2	3.5	2.5	6.2	3.8	1.2	0.7	4.8	14.5	82.2	3.8	52.8
Busch Stadium, St. LouisGround · won 2 of 5	5	0.0	0.0	0.0	0.0	0.0	0.4	0.2	4.0	1.4	5.0	1.8	1.0	0.2	6.0	18.0	94.8	2.4	61.8
PNC Park, PittsburghGround · won 3 of 5	5	0.0	0.0	0.0	0.2	0.0	0.4	0.2	4.0	2.0	4.8	1.4	1.8	0.6	5.9	17.6	95.6	2.2	60.4
Wrigley Field, ChicagoGround · won 2 of 5	5	0.0	0.0	0.0	0.0	0.0	0.2	0.0	4.6	3.8	5.0	2.8	0.4	0.2	4.9	14.6	95.8	2.8	57.2
American Family Field, MilwaukeeGround · won 3 of 4	4	–	–	–	–	–	–	–	5.3	2.0	3.8	1.8	–	0.3	5.8	17.3	86.8	1.8	56.0
Citizens Bank Park, PhiladelphiaGround · won 2 of 4	4	0.0	0.0	0.0	0.0	0.0	0.8	0.8	5.3	1.5	3.3	1.5	4.3	0.8	5.8	17.5	83.0	1.5	54.3
Tropicana Field, St. PetersburgGround · won 0 of 3	3	–	–	–	–	–	–	–	3.0	2.3	7.7	6.0	–	1.7	5.0	15.0	94.3	6.0	59.7
Citi Field, QueensGround · won 0 of 2	2	0.0	0.0	0.0	0.0	0.0	1.0	1.0	6.0	3.0	6.5	5.0	4.5	1.5	5.5	16.5	97.5	5.0	64.0
Daikin Park, HoustonGround · won 0 of 2	2	–	–	–	–	–	–	–	2.5	0.5	8.0	4.5	–	0.5	4.5	13.5	75.0	4.5	52.0
Fenway Park, BostonGround · won 1 of 2	2	–	–	–	–	–	–	–	3.5	3.5	7.0	5.0	–	1.5	5.0	15.0	93.5	5.0	57.5
Great American Ball Park, CincinnatiGround · won 2 of 2	2	0.0	0.0	0.0	0.0	0.0	0.5	0.0	4.0	2.0	3.0	1.5	1.5	0.0	5.5	16.5	85.5	1.5	53.5
loanDepot park, MiamiGround · won 1 of 2	2	–	–	–	–	–	–	–	5.0	1.5	3.5	1.5	–	0.0	6.0	18.0	81.0	1.5	50.5
Nationals Park, WashingtonGround · won 2 of 2	2	0.0	0.0	0.0	0.0	0.0	2.0	0.0	5.0	1.0	7.5	3.5	7.5	1.0	6.0	18.0	88.0	3.5	58.0
Oakland ColiseumGround · won 1 of 2	2	–	–	–	–	–	–	–	8.0	1.5	4.5	2.5	–	1.0	6.0	18.0	98.0	3.0	66.0
T-Mobile Park, SeattleGround · won 1 of 2	2	–	–	–	–	–	–	–	4.0	1.0	6.0	2.0	–	1.0	5.5	16.5	83.0	2.0	57.0
Truist Park, AtlantaGround · won 1 of 2	2	–	–	–	–	–	–	–	8.0	1.5	2.0	0.0	–	0.0	7.0	21.0	94.5	0.0	61.5
Yankee Stadium, BronxGround · won 0 of 2	2	–	–	–	–	–	–	–	3.5	2.5	6.5	5.5	–	2.0	4.3	13.0	88.0	5.5	56.5
Angel Stadium, AnaheimGround · won 1 of 1	1	–	–	–	–	–	–	–	6.0	4.0	1.0	1.0	–	0.0	5.0	15.0	98.0	1.0	58.0
Comerica Park, DetroitGround · won 1 of 1	1	–	–	–	–	–	–	–	5.0	2.0	7.0	3.0	–	1.0	6.3	19.0	92.0	3.0	63.0