Mickey Haefner

HandednessBats Left · Throws Left

Listed at5 ft 8 in · 160 lb

BornOctober 9, 1912 · Lenzburg, IL, USA

MLB debutApril 22, 1943

Final gameSeptember 28, 1950

Seasons8 (1943–1950)

Washington Senators 1943–1948; Chicago White Sox 1949; Washington Senators 1949; Boston Braves 1950; Chicago White Sox 1950

Percentile snapshot

1949 season — qualified pitchers

19.7

13.1

45.9

42.6

11.5

SHO

34.4

169

88.5

62.3

34.4

172.0

13.1

ERA

4.40

11.5

WHIP

1.529

14.8

K/9

2.09

3.3

FIP

5.00

1.6

FIP-

120.6

1.6

ERA+

94.3

sWAR

1.5

24.6

of 62 qualified 1949 pitchers (min 154 IP)

Career, era-adjusted

ERA+

102.1

46.8

sWAR

16.8

92.1

ERA+ measured against qualified careers (1,000+ IP), 1,334 of them; sWAR measured against every career in history, 24,011 of them. Only era-adjusted career stats carry a percentile — a raw career total gets a rank instead, because pooling the 1890s with the 2020s is a choice, not a measurement.

Season by season

Batting

Season	G	PA	AB	R	H	2B	3B	RBI	BB	SO	BA	OBP	SLG	OPS	wRC+	OPS+	wOBA	sWAR
1943	36	57	45	4	6	1	1	4	5	9	.133	.220	.200	.420	19.0	24.4	.215	3.6
1944	31	84	70	4	11	1	0	6	6	12	.157	.224	.171	.395	12.1	16.2	.202	2.9
1945	37	97	82	8	20	1	0	5	9	13	.244	.319	.256	.575	75.0	73.4	.289	1.7
1946	33	88	74	6	15	2	0	3	10	15	.203	.298	.230	.527	53.5	52.3	.266	4.0
1947	31	69	59	4	8	0	0	1	7	9	.136	.227	.136	.363	-1.0	2.9	.195	1.8
1948	28	47	43	1	7	1	0	3	3	9	.163	.217	.186	.403	1.1	8.5	.202	1.7
1949	34	64	48	1	11	2	0	1	7	10	.229	.327	.271	.598	62.1	60.1	.302	1.5
1950	32	34	27	0	6	1	0	1	3	3	.222	.300	.259	.559	48.3	46.5	.273	-0.4

Pitching

Season	G	GS	W	L	SV	CG	SHO	H	ER	BB	SO	HR	IP	ERA	WHIP	K/9	FIP	FIP-	ERA+	sWAR
1943	36	13	11	5	6	8	1	126	42	60	65	4	165.3	2.29	1.125	3.54	3.04	93.9	141.5	3.6
1944	31	28	12	15	1	18	3	221	77	71	86	7	228.0	3.04	1.281	3.39	3.18	96.7	108.2	2.9
1945	37	28	16	14	3	19	1	226	92	69	83	10	238.3	3.47	1.238	3.13	3.25	103.4	90.4	1.7
1946	33	27	14	11	1	17	2	220	72	80	85	10	227.7	2.85	1.318	3.36	3.39	101.7	117.2	4.0
1947	31	28	10	14	1	14	4	195	78	85	77	8	193.0	3.64	1.451	3.59	3.55	96.8	100.8	1.8
1948	28	20	5	13	0	4	0	151	66	61	45	7	147.7	4.02	1.436	2.74	4.12	97.0	105.5	1.7
1949	33	24	9	11	1	8	2	169	84	94	40	16	172.0	4.40	1.529	2.09	5.00	120.6	94.3	1.5
1950	32	11	1	8	0	3	0	106	60	57	27	14	94.7	5.70	1.722	2.57	5.87	135.7	75.5	-0.4

sWAR is the season TOTAL for a player who both hit and pitched: the record book carries one figure per season, not a split, so the same number appears on both lines rather than being counted twice.

Career totals

Batting

262

540

448

RBI

.1875

OBP

.2691

SLG

.2121

OPS

.4812

Pitching

G (P)

261

179

470th-most career CG

SHO

478th-most career SHO

1,467

SO (P)

508

BB allowed

577

ERA

3.504

449th-lowest career ERA

WHIP

1.3575

K/9

3.12

A total is called out only where it ranks in the all-time top 500; hover a figure for its rank and the size of the field it was ranked in. Ranks are absolute facts and carry no percentile — the population for "career home runs" would be an editorial choice, and the rank is not.

Best games

Batting

Date	Game	AB	R	H	2B	3B	RBI	BB	TB
1946-06-23	MIN @ BAL Gameday	3	1	2	1	0	0	2	3
1948-06-10	BAL @ MIN Gameday	4	0	2	1	0	0	0	3
1943-08-02	BAL @ MIN Gameday	3	0	1	0	1	1	0	3
1944-09-04	BOS @ MIN Gameday	4	0	2	0	0	2	0	2
1944-09-29	MIN @ DET Gameday	4	2	2	0	0	2	1	2

Pitching

Date	Game	IP	H	R	ER	BB	SO	HR
1944-08-21	BAL @ MIN Gameday	12.0	11	5	4	2	9	1
1947-08-06	BOS @ MIN Gameday	9.0	5	0	0	2	8	0
1943-09-19	NYY @ MIN Gameday	9.0	2	1	1	2	7	0
1946-09-12	MIN @ BAL Gameday	9.0	13	6	3	1	7	0
1947-07-25	CLE @ MIN Gameday	9.0	3	1	1	1	7	0

Ranked from our own play-by-play game log, which begins in 1901 — not from the record book, so a career played outside it shows nothing here rather than a short list.