best pitcher single-season winning-percentage

Tim Keefe has the lowest ERA in a season, with an ERA of 0.86 in his rookie season in 1880.

Interpreted as:

best with a minimum of 1 IP per team game pitcher single-season winning-percentage

	NAME	ERA	W%	SEASON	TM	W	L	G	GS	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	Tim Keefe T. Keefe	0.86	.500	1880	TRO	6	6	12	12	39	12	0	0	105.0	68	10	27	0	16		0		397	1	3.34	1.37	2.44	0.00	9.8	4.0	0.80		2.31	35	2.25	91	5.83	3.6
2	Dutch Leonard D. Leonard	0.96	.792	1914	BSA	19	5	36	25	176	17	7	3	224.2	139	24	34	3	60	8	8		842	2	7.05	2.40	2.93	0.12	20.9	7.1	0.89	.229	1.36	36	1.95	70	5.57	20.4
3	Dan Casey D. Casey	1.00	.500	1884	WIL	1	1	2	2	10	2	0	0	18.0	23	2	17	0	4		0		83	0	5.00	2.00	2.50	0.00	12.0	4.8	1.50		8.50	32	2.83	104	11.50	-0.1
4	Ed Cushman E. Cushman	1.00	1.000	1884	MIL	4	0	4	4	47	4	2	0	36.0	10	4	4	0	3		0		125	1	11.75	0.75	15.67	0.00	37.6	2.4	0.36		1.00	8	0.91	8	2.50	17.4
5	Mordecai Brown M. Brown	1.04	.813	1906	CHC	26	6	36	32	144	27	9	3	277.1	198	32	56	1	61	4	4		1,044	2	4.67	1.98	2.36	0.03	13.8	5.8	0.93	.236	1.82	39	2.08	75	6.43	21.1
6	Bob Gibson B. Gibson	1.12	.710	1968	STL	22	9	34	34	268	28	13	0	304.2	198	38	49	11	62	7	0	6	1,161	4	7.92	1.83	4.32	0.32	23.1	5.3	0.85	.230	1.45	38	1.77	63	5.85	34.8
7	Christy Mathewson C. Mathewson	1.14	.806	1909	NYG	25	6	37	33	149	26	8	2	275.1	192	35	57	2	36	0	4		998	4	4.87	1.18	4.14	0.07	14.9	3.6	0.83	.234	1.86	44	1.62	61	6.28	31.7
8	Walter Johnson W. Johnson	1.14	.837	1913	WSH	36	7	48	36	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
9	Jack Pfiester J. Pfiester	1.15	.609	1907	CHC	14	9	30	22	90	13	3	0	195.0	143	25	61	1	48	5	5		745	2	4.15	2.22	1.88	0.05	12.1	6.4	0.98	.236	2.82	47	2.14	81	6.60	10.6
10	Addie Joss A. Joss	1.16	.686	1908	CLE	24	11	42	35	130	29	9	2	325.0	232	42	77	2	30	2	6		1,209	6	3.60	0.83	4.33	0.06	10.8	2.5	0.81	.220	2.13	49	1.68	76	6.42	19.3
11	Carl Lundgren C. Lundgren	1.17	.720	1907	CHC	18	7	28	25	84	21	7	0	207.0	130	27	42	0	92	2	3		795	2	3.65	4.00	0.91	0.00	10.6	11.6	1.07	.211	1.83	48	2.73	104	5.65	-2.3
12	Denny Driscoll D. Driscoll	1.21	.591	1882	PIT	13	9	23	23	59	23	0	0	201.0	162	27	73	0	12		0		799	7	2.64	0.54	4.92	0.00	7.4	1.5	0.87		3.27	45	2.36	84	7.25	10.2
13	Grover Alexander G. Alexander	1.22	.756	1915	PHN	31	10	49	42	241	36	12	3	376.1	253	51	86	3	64	10	7		1,435	2	5.76	1.53	3.77	0.07	16.8	4.5	0.84	.224	2.06	43	1.82	63	6.05	44.1
14	George Bradley G. Bradley	1.23	.703	1876	STL	45	19	64	64	103	63	16	0	573.0	470	78	229	3	38		0		2,269	34	1.62	0.60	2.71	0.05	4.5	1.7	0.89		3.60	58	2.14	101	7.38	-20.7
15	Justin Wrobleski J. Wrobleski	1.25	1.000	2026	LAD	5	0	6	5	15	0	0	0	36.0	26	5	5	0	10	1	1	0	143	1	3.75	2.50	1.50	0.00	10.5	7.0	1.00	.222	1.25	31	3.22	76	6.50	3.9
16	Cy Young C. Young	1.26	.656	1908	BOS	21	11	36	33	150	30	3	2	299.0	230	42	68	1	37	1	3		1,116	4	4.52	1.11	4.05	0.03	13.4	3.3	0.89	.247	2.05	52	1.52	67	6.92	25.4
17	Ed Walsh E. Walsh	1.27	.474	1910	CWS	18	20	45	36	258	33	7	5	369.2	242	52	87	5	61	4	7		1,359	6	6.28	1.49	4.23	0.12	19.0	4.5	0.82	.230	2.12	52	1.63	66	5.89	34.8
18	Walter Johnson W. Johnson	1.27	.639	1918	WSH	23	13	39	29	162	29	8	3	326.0	241	46	71	2	70	8	10		1,261	8	4.47	1.93	2.31	0.06	12.8	5.6	0.95	.235	1.96	47	2.04	74	6.65	25.9
19	Christy Mathewson C. Mathewson	1.28	.775	1905	NYG	31	9	43	37	206	32	8	3	338.2	252	48	85	4	64	1	6		1,294	6	5.47	1.70	3.22	0.11	15.9	4.9	0.93	.243	2.26	42	2.03	69	6.70	34.9
20	Jack Taylor J. Taylor	1.29	.676	1902	CHO	23	11	37	34	88	34	8	1	333.2	273	48	86	2	45	12	3		1,278	10	2.37	1.21	1.96	0.05	6.9	3.5	0.95	.240	2.32	49	2.73	98	7.36	0.6
21	Guy Hecker G. Hecker	1.30	.500	1882	LOU	6	6	13	11	33	10	0	0	104.0	75	15	49	0	5		1		403	7	2.86	0.43	6.60	0.00	8.2	1.2	0.77		4.24	49	2.27	82	6.49	5.1
22	Jack Coombs J. Coombs	1.30	.775	1910	PHA	31	9	45	38	224	35	13	1	353.0	248	51	74	0	115	7	6		1,353	10	5.71	2.93	1.95	0.00	16.6	8.5	1.03	.246	1.89	53	2.09	83	6.32	15.8
23	Mordecai Brown M. Brown	1.31	.750	1909	CHC	27	9	50	34	172	32	8	7	342.2	246	50	78	1	53	7	15		1,280	9	4.52	1.39	3.25	0.03	13.4	4.1	0.87	.234	2.05	51	1.78	68	6.46	32.4
24	Walter Johnson W. Johnson	1.36	.595	1910	WSH	25	17	45	42	313	38	8	1	370.0	262	56	92	1	76	13	3		1,367	21	7.61	1.85	4.12	0.02	22.9	5.6	0.91	.271	2.24	56	1.39	56	6.37	45.2
25	George Bradley G. Bradley	1.38	.619	1880	PRO	13	8	28	20	54	16	4	2	196.0	158	30	66	2	6		7		757	7	2.48	0.28	9.00	0.09	7.1	0.8	0.84		3.03	60	2.21	96	7.26	0.6

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MLB 2026 Batting Leaders

HR Leaders

14

Murakami

14

Judge

12

Rice

RBI Leaders

32

Olson

30

Baldwin

29

Stewart

Batting Average Leaders

.382

Vargas

.343

Rice

.338

Lopez

Hit Leaders

46

Baldwin

46

Lopez

46

Albies

Run Leaders

33

Baldwin

33

Olson

32

Judge

OBP Leaders

.455

Rice

.438

Alvarez

.434

Turang

SLG Leaders

.759

Rice

.667

Alvarez

.664

Olson

SB Leaders

14

Nuñez

13

Caballero

13

Ramírez

MLB 2026 Pitching Leaders

Win Leaders

6

Sale

5

Schlittler

5

Williams

Strikeout Leaders

59

Misiorowski

56

Cease

54

Soriano

ERA Leaders

1.25

Wrobleski

1.52

Schlittler

1.64

Martin

WHIP Leaders

0.83

Glasnow

0.85

Imanaga

0.87

Schlittler

K/9 Leaders

13.97

Misiorowski

13.15

Cease

11.68

Gore

K/BB Leaders

7.67

Hancock

7.50

Skubal

5.89

Schlittler

Walk Leaders

6

Woo

6

Skubal

6

Hancock

MLB Fantasy 2026

FanDuel Points Leaders

616.6

Ohtani

556.9

Judge

556.6

Olson

DraftKings Points Leaders

420.7

Ohtani

411

Judge

410

Olson

MLB 2026 Betting

Best Record ATS

25-11

21-12

22-13

21-13

Worst Record ATS

7-28

11-24

12-24

12-23

14-22

14-21

MLB 2026 Standings

NL East	W	L	PCT	GB
Braves	25	11	.694
Marlins	16	19	.457	8.5
Nationals	16	19	.457	8.5
Phillies	15	20	.429	9.5
Mets	13	22	.371	11.5
NL Central	W	L	PCT	GB
Cubs	23	12	.657
Cardinals	21	14	.600	2.0
Reds	20	15	.571	3.0
Pirates	19	16	.543	4.0
Brewers	18	16	.529	4.5
NL West	W	L	PCT	GB
Dodgers	22	13	.629
Padres	20	14	.588	1.5
Diamondbacks	16	17	.485	5.0
Giants	14	21	.400	8.0
Rockies	14	22	.389	8.5

AL East	W	L	PCT	GB
Yankees	24	11	.686
Rays	22	12	.647	1.5
Blue Jays	16	19	.457	8.0
Orioles	15	20	.429	9.0
Red Sox	14	21	.400	10.0
AL Central	W	L	PCT	GB
Guardians	18	18	.500
Tigers	18	18	.500
White Sox	17	18	.486	0.5
Royals	16	19	.457	1.5
Twins	15	20	.429	2.5
AL West	W	L	PCT	GB
Athletics	18	16	.529
Mariners	17	19	.472	2.0
Rangers	16	18	.471	2.0
Astros	14	22	.389	5.0
Angels	13	23	.361	6.0