which pitcher has the highest winning percentage in a season at least 20 wins

Ron Guidry has the best win percentage with 20+ pitcher wins in a season, at .893 in 1978.

Showing

Assumption:All-time

	NAME	W	W%	SEASON	TM	L	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Ron Guidry R. Guidry	25	.893	1978	NYY	3	35	35	1.74	248	16	9	0	273.2	187	53	61	13	72	1	0	1	1,057	7	8.16	2.37	3.44	0.43	23.5	6.8	0.95	.241	2.01	48	2.18	58	6.15	48.5
2	Lefty Grove L. Grove	31	.886	1931	PHA	4	41	30	2.06	175	27	4	5	288.2	249	66	84	10	62	1	10		1,160	2	5.46	1.93	2.82	0.31	15.1	5.3	1.08	.262	2.62	47	3.01	70	7.76	40.8
3	Cliff Lee C. Lee	22	.880	2008	CLE	3	31	31	2.54	170	4	2	0	223.1	214	63	68	12	34	5	0	1	891	4	6.85	1.37	5.00	0.48	19.1	3.8	1.11	.301	2.74	59	2.82	67	8.62	35.4
4	Preacher Roe P. Roe	22	.880	1951	BKN	3	34	33	3.04	113	19	2	0	257.2	247	87	91	30	64	0	1		1,031	2	3.95	2.24	1.77	1.05	11.0	6.2	1.21	.263	3.18	76	3.86	94	8.63	6.8
5	Clayton Kershaw C. Kershaw	21	.875	2014	LAD	3	27	27	1.77	239	6	2	0	198.1	139	39	42	9	31	2	0	0	749	7	10.85	1.41	7.71	0.41	31.9	4.1	0.86	.278	1.91	51	1.81	50	6.31	40.5
6	Max Scherzer M. Scherzer	21	.875	2013	DET	3	32	32	2.90	240	0	0	0	214.1	152	69	73	18	56	4	0	0	836	6	10.08	2.35	4.29	0.76	28.7	6.7	0.97	.259	3.07	72	2.74	69	6.38	29.2
7	Fred Goldsmith F. Goldsmith	21	.875	1880	CWS	3	26	24	1.75	90	22	4	1	210.1	189	41	80	2	18		1		837	10	3.85	0.77	5.00	0.09	10.8	2.2	0.98		3.42	72	2.06	84	8.09	10.4
8	Joe Wood J. Wood	34	.872	1912	BSA	5	43	38	1.91	258	35	10	1	344.0	267	73	104	2	82	12	5		1,328	7	6.75	2.15	3.15	0.05	19.4	6.2	1.01	.272	2.72	58	2.25	71	6.99	35.1
9	Julio Urías J. Urías	20	.870	2021	LAD	3	32	32	2.96	195	0	0	0	185.2	151	61	67	19	38	7	0	3	745	2	9.45	1.84	5.13	0.92	26.2	5.1	1.02	.272	3.25	73	3.12	73	7.32	23.8
10	Roger Clemens R. Clemens	20	.870	2001	NYY	3	33	33	3.51	213	0	0	0	220.1	205	86	94	19	72	5	0	1	918	14	8.70	2.94	2.96	0.78	23.2	7.8	1.26	.305	3.84	80	3.28	74	8.37	28.1
11	David Cone D. Cone	20	.870	1988	NYM	3	35	28	2.22	213	8	4	0	231.1	178	57	67	10	80	4	0	7	936	10	8.29	3.11	2.66	0.39	22.8	8.5	1.12	.267	2.61	68	2.57	75	6.93	22.5
12	Whitey Ford W. Ford	25	.862	1961	NYY	4	39	39	3.21	209	11	3	0	283.0	242	101	108	23	92	1	0	3	1,159	8	6.65	2.93	2.27	0.73	18.0	7.9	1.18	.263	3.43	85	3.14	82	7.70	22.7
13	Bill Donovan B. Donovan	25	.862	1907	DET	4	32	28	2.19	123	27	3	1	271.0	222	66	96	3	82	8	4		1,073	2	4.08	2.72	1.50	0.10	11.5	7.6	1.12	.256	3.19	84	2.41	98	7.37	2
14	Roger Clemens R. Clemens	24	.857	1986	BOS	4	33	33	2.48	238	10	1	0	254.0	179	70	77	21	67	4	0	0	997	11	8.43	2.37	3.55	0.74	23.9	6.7	0.97	.237	2.73	58	2.80	69	6.34	36.3
15	Dwight Gooden D. Gooden	24	.857	1985	NYM	4	35	35	1.53	268	16	8	0	276.2	198	47	51	13	69	2	0	4	1,065	6	8.72	2.24	3.88	0.42	25.2	6.5	0.97	.259	1.66	44	2.12	59	6.44	45.6
16	Pedro Martinez P. Martinez	23	.852	1999	BOS	4	31	29	2.07	313	5	1	0	213.1	160	49	56	9	37	9	1	1	835	6	13.20	1.56	8.46	0.38	37.5	4.4	0.92	.323	2.36	42	1.38	30	6.75	79.4
17	Lefty Grove L. Grove	28	.848	1930	PHA	5	50	32	2.54	209	22	2	9	291.0	273	82	101	8	60	5	17		1,191	2	6.46	1.86	3.48	0.25	17.5	5.0	1.14	.292	3.12	53	3.09	64	8.44	55.6
18	Rick Porcello R. Porcello	22	.846	2016	BOS	4	33	33	3.15	189	3	0	0	223.0	193	78	85	23	32	13	0	0	890	3	7.63	1.29	5.91	0.93	21.2	3.6	1.01	.269	3.43	71	3.39	81	7.79	20.1
19	Mike Hampton M. Hampton	22	.846	1999	HOU	4	34	34	2.90	177	3	2	0	239.0	206	77	86	12	101	5	0	2	979	9	6.67	3.80	1.75	0.45	18.1	10.3	1.28	.284	3.24	68	3.63	84	7.76	19.4
20	Ian Kennedy I. Kennedy	21	.840	2011	ARI	4	33	33	2.88	198	1	1	0	222.0	186	71	73	19	55	9	0	0	900	11	8.03	2.23	3.60	0.77	22.0	6.1	1.09	.270	2.96	73	3.21	83	7.54	16.5
21	Lefty Gomez L. Gomez	26	.839	1934	NYY	5	38	33	2.33	158	25	6	2	281.2	223	73	86	12	96	0	5		1,142	3	5.05	3.07	1.65	0.38	13.8	8.4	1.13	.241	2.75	56	3.57	86	7.13	17.7
22	Denny McLain D. McLain	31	.838	1968	DET	6	41	41	1.96	280	28	6	0	336.0	241	73	86	31	63	6	0	2	1,288	3	7.50	1.69	4.44	0.83	21.7	4.9	0.90	.231	2.30	64	2.53	79	6.46	24.8
23	Bill Hoffer B. Hoffer	31	.838	1895	BAL	6	41	38	3.21	80	32	4	0	314.0	296	112	146	9	124	19	3		1,349	3	2.29	3.55	0.65	0.26	5.9	9.2	1.34	.257	4.18	67	4.81	101	8.48	-1.3
24	Walter Johnson W. Johnson	36	.837	1913	WSH	7	48	36	1.14	243	29	11	2	346.0	232	44	56	9	38	9	10		1,271	2	6.32	0.99	6.39	0.23	19.1	3.0	0.78	.229	1.46	39	1.90	63	6.03	42.3
25	J.A. Happ	20	.833	2016	TOR	4	32	32	3.18	163	0	0	0	195.0	168	69	72	22	60	6	0	0	796	3	7.52	2.77	2.72	1.02	20.5	7.5	1.17	.268	3.32	76	3.95	93	7.75	6.3

Unlock 2x data

More MLB News

Brewers' Robert Gasser spins World Series gem unlike any by a lefty since Sandy Koufax

Oct 27, 2026

Brewers rout the Rays 10-1 to move within a win of their first World Series title

Oct 27, 2026

Rays put on the brink of World Series flop by Brewers' historic 8-run, 2-out surge

Oct 27, 2026

Roberto Clemente Award List

Oct 26, 2026

MLB Potential Free Agents List

Oct 26, 2026

Mets' Francisco Lindor wins Roberto Clemente Award for humanitarian work

Oct 26, 2026

More Yankees Stats

Team Batting Leaders

4

Rice

RBI

9

Rice

AVG

.429

Volpe

Team Pitching Leaders

1

Schlittler

13

Fried

ERA

0.00

Headrick

Team Rankings

223

2nd

739

9th

1,450

6th

ERA

3.23

1st

2026 Division Standings

TEAM	W	L	PCT	GB
Rays	98	64	.605
Yankees	93	68	.578	4.5
Red Sox	87	75	.537	11.0
Orioles	79	82	.491	18.5
Blue Jays	79	83	.488	19.0

Last Game

Rays

3 - 0

Final

Yankees

0 - 3

Wed 7 Oct 2026

MLB 2026 Batting Leaders

Playoffs HR Leaders

4

Rice

3

Contreras

3

Muncy

Playoffs RBI Leaders

9

Chourio

9

Rice

8

Hicks

Playoffs Batting Average Leaders

1.000

Taylor

.500

Hoerner

.500

Genao

Playoffs Hit Leaders

18

Contreras

14

Chourio

14

Díaz

Playoffs Run Leaders

8

Turang

8

Ramírez

8

Díaz

Playoffs OBP Leaders

1.000

Taylor

.667

De Paula

.500

Rice

Playoffs SLG Leaders

1.333

Velázquez

1.333

Sheets

1.105

Rice

Playoffs SB Leaders

5

Simpson

4

Chisholm

3

Chourio

MLB 2026 Pitching Leaders

Playoffs Win Leaders

3

Hall

2

Williams

2

Rasmussen

Playoffs Strikeout Leaders

33

Williams

27

Rasmussen

19

Sale

Playoffs ERA Leaders

0.00

Suarez

0.00

Peterson

0.00

Hader

Playoffs WHIP Leaders

0.00

Chapman

0.00

VanWey

0.00

Weissert

Playoffs K/9 Leaders

27.00

Brown

27.00

Chapman

27.00

Bibee

Playoffs K/BB Leaders

19.00

Sale

18.00

Burke

13.00

Fried

Playoffs Walk Leaders

0

Suarez

0

Warren

0

Duran

MLB Fantasy 2026

Playoffs FanDuel Points Leaders

161

Rasmussen

155.6

Ramírez

155.2

Contreras

Playoffs DraftKings Points Leaders

122

Contreras

118

Ramírez

107

Chourio

MLB 2026 Betting

Best Record ATS

97-72

96-72

91-71

88-74

87-75

93-81

Worst Record ATS

60-102

69-96

72-98

75-87

76-88

MLB 2026 Standings

NL East	W	L	PCT	GB
Braves - y	94	68	.580
Phillies - w	88	74	.543	6.0
Marlins	80	82	.494	14.0
Nationals	77	85	.475	17.0
Mets	74	88	.457	20.0
NL Central	W	L	PCT	GB
Brewers - y	103	59	.636
Cubs - w	89	73	.549	14.0
Pirates	82	80	.506	21.0
Cardinals	77	85	.475	26.0
Reds	75	87	.463	28.0
NL West	W	L	PCT	GB
Dodgers - y	100	62	.617
Padres - w	91	71	.562	9.0
Diamondbacks	86	76	.531	14.0
Giants	65	97	.401	35.0
Rockies	58	104	.358	42.0

AL East	W	L	PCT	GB
Rays - y	98	64	.605
Yankees - w	93	68	.578	4.5
Red Sox - w	87	75	.537	11.0
Orioles	79	82	.491	18.5
Blue Jays	79	83	.488	19.0
AL Central	W	L	PCT	GB
Guardians - y	85	77	.525
White Sox - w	84	78	.519	1.0
Twins	77	85	.475	8.0
Tigers	76	86	.469	9.0
Royals	69	93	.426	16.0
AL West	W	L	PCT	GB
Astros - y	81	81	.500
Rangers	80	82	.494	1.0
Mariners	76	86	.469	5.0
Athletics	64	98	.395	17.0
Angels	62	100	.383	19.0

MLB 2026 Scores & Schedule

Scores

DATE	MATCHUP			SCORE
Tue 9/15	ATH	@	TBR	1-2
Tue 9/15	MIL	@	PIT	5-1
Tue 9/15	NYY	@	MIN	8-1
Wed 9/16	CWS	@	CLE	3-6
Wed 9/16	SFG	@	STL	6-5

Schedule

DATE	MATCHUP			TIME (ET)
Tue 10/27	MIL	@	TBR	8:00 PM
Wed 10/28	MIL	@	TBR	8:00 PM
Fri 10/30	TBR	@	MIL	8:00 PM
Sat 10/31	TBR	@	MIL	8:00 PM

Ron Guidry has the best win percentage with 20+ pitcher wins in a season, at .893 in 1978.

Related Searches

More MLB News

More Yankees Stats

4

9

.429

1

13

0.00

MLB 2026 Batting Leaders

4

3

3

9

9

8

1.000

.500

.500

18

14

14

8

8

8

1.000

.667

.500

1.333

1.333

1.105

5

4

3

MLB 2026 Pitching Leaders

3

2

2

33

27

19

0.00

0.00

0.00

0.00

0.00

0.00

27.00

27.00

27.00

19.00

18.00

13.00

0

0

0

MLB Fantasy 2026

161

155.6

155.2

122

118

107

MLB 2026 Betting

MLB 2026 Standings

MLB 2026 Scores & Schedule

Scores

Schedule