Mickey Haefner

Pitcher · Career Stats, Bio & Records (1943-1950)

W–L 78–91
ERA 3.50
WHIP 1.36
SO 508
Pitcher PIV -3131.3
Position
Pitcher
Bats / Throws
L / L
Height / Weight
5'8" / 160 lb
Born
10/9/1912 in Lenzburg, IL, USA
Died
1/3/1995 in New Athens, IL, USA
MLB Debut
1943-04-22
Last Game
1950-09-28

Full name: Milton Arnold Haefner

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Career Pitching Statistics

W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
78 91 261 179 91 13 13 1466.7 1,414 571 76 577 508 3.50 -3131.3

Career ERA 3.50 vs. league average 3.84 across their career seasons — 8.8% 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
1943 WS1 AL 11 5 36 13 8 1 6 165.3 126 42 60 65 2.29 3.50 (+35%) 693.3
1944 WS1 AL 12 15 31 28 18 3 1 228.0 221 77 71 86 3.04 3.57 (+15%) 1584.1
1945 WS1 AL 16 14 37 28 19 1 3 238.3 226 92 69 83 3.47 3.67 (+5%) 903.1
1946 WS1 AL 14 11 33 27 17 2 1 227.7 220 72 80 85 2.85 3.59 (+21%) 359.3
1947 WS1 AL 10 14 31 28 14 4 1 193.0 195 78 85 77 3.64 3.97 (+8%) 760.2
1948 WS1 AL 5 13 28 20 4 0 0 147.7 151 66 61 45 4.02 4.10 (+2%) -141.2
1949 WS1 AL 5 5 19 12 4 1 0 91.7 85 45 53 23 4.42 4.12 (-7%) -1567.5
1949 CHA AL 4 6 14 12 4 1 1 80.3 84 39 41 17 4.37 4.12 (-6%) -2297.8
1950 CHA AL 1 6 24 9 2 0 0 70.7 83 45 45 17 5.73 4.36 (-31%) -3114.7
1950 BSN NL 0 2 8 2 1 0 0 24.0 23 15 12 10 5.62 4.36 (-29%) -310.2
Career · 10 seasons 78 91 261 179 91 13 13 1,466.2 1,414 571 577 508 3.50 — -3,131

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
262 448 28 84 9 1 0 24 0 50 80 .188 .269 .212 .481 -1,562

Career AVG .188 vs. league average .261 across their career seasons — 28.2% below league average.

Career OBP .269 vs. league average .334 across their career seasons — 19.4% below league average.

Career SLG .212 vs. league average .369 across their career seasons — 42.5% below league average.

Career OPS .481 vs. league average .703 across their career seasons — 31.5% 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
1943 WS1 AL 36 45 4 6 1 1 0 4 0 5 9 .133 — — — — -258.2
1944 WS1 AL 31 70 4 11 1 0 0 6 0 6 12 .157 .261 (-40%) .325 (-31%) .357 (-52%) .683 (-42%) -441.6
1945 WS1 AL 37 82 8 20 1 0 0 5 0 9 13 .244 .260 (-7%) .328 (-3%) .354 (-28%) .683 (-16%) -172.7
1946 WS1 AL 33 74 6 15 2 0 0 3 0 10 15 .203 .256 (-21%) .328 (-10%) .358 (-36%) .687 (-23%) -241.3
1947 WS1 AL 31 59 4 8 0 0 0 1 0 7 9 .136 .262 (-48%) .336 (-32%) .376 (-64%) .712 (-49%) -447.9
1948 WS1 AL 28 43 1 7 1 0 0 3 0 3 9 .163 — — — — 0.0
1949 WS1 AL 20 25 1 5 2 0 0 1 0 3 3 .200 — — — — 0.0
1949 CHA AL 14 23 0 6 0 0 0 0 0 4 7 .261 — — — — 0.0
1950 CHA AL 24 20 0 4 0 0 0 1 0 3 3 .200 — — — — 0.0
1950 BSN NL 8 7 0 2 1 0 0 0 0 0 0 .286 — — — — 0.0
Career · 10 seasons 262 448 28 84 9 1 0 24 0 50 80 .188 — — — — -1,562

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.

Game Log & Splits

View full game log (523 games) →

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

Batting — Home / Away

SplitGABRHHRRBIAVG
Home1332411150014.207
Away1292071734010.164

Pitching — Home / Away

SplitGIPHERBBSOERA
Home133834.17272563003062.76
Away128633.06873252772034.62

Last 10 Games — Batting

DateTmOppResABRH2B3BHRRBIBBSO
1950-09-28 BSNBROL 201000000
1950-09-09 BSNPHIL 000000000
1950-09-01 BSNPHIL 000000000
1950-08-31 BSNBROL 000000000
1950-08-24 BSNCHCL 301100000
1950-08-21 BSNSTLL 000000000
1950-08-15 BSNPHIL 100000000
1950-08-13 BSNBROL 100000000
1950-08-06 CHWBOSL 000000000
1950-08-05 CHWBOSL 000000000

Last 10 Games — Pitching

DateTmOppDecIPHRERBBSOHR
1950-09-28 BSNBRO L 6.1566311
1950-09-09 BSNPHI — 0.1100000
1950-09-01 BSNPHI — 1.0322100
1950-08-31 BSNBRO — 1.2122101
1950-08-24 BSNCHC L 8.01043240
1950-08-21 BSNSTL — 1.1111221
1950-08-15 BSNPHI — 4.1200230
1950-08-13 BSNBRO — 1.1000100
1950-08-06 CHWBOS — 1.0000100
1950-08-05 CHWBOS — 1.1432210

Fielding Statistics

Career Fielding Totals by Position

Position G GS PO A E DP
P 261 0 53 287 11 22

Season-by-Season Fielding

Year Team Pos G GS PO A E DP
1943 WS1 P 36 0 7 31 0 3
1944 WS1 P 31 0 8 45 1 5
1945 WS1 P 37 0 10 53 3 1
1946 WS1 P 33 0 13 36 3 2
1947 WS1 P 31 0 7 27 0 3
1948 WS1 P 28 0 4 38 1 2
1949 WS1 P 19 0 0 26 1 0
1949 CHA P 14 0 2 17 2 3
1950 CHA P 24 0 2 10 0 2
1950 BSN P 8 0 0 4 0 1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Position Games
Pitcher 261

Most Similar Players

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

Career Spans

Mickey Haefner (highlighted) compared to peers across the same era.

  1. 98
    Allen Sothoron
    91-100, 3.31 ERA
  2. 85
    Bob Porterfield
    87-97, 3.79 ERA
  3. 80
    Al Smith
    99-101, 3.72 ERA
  4. 79
    Bill Walker
    97-77, 3.59 ERA
  5. 77
    Hank Borowy
    108-82, 3.50 ERA
  6. 76
    Bert Gallia
    66-68, 3.14 ERA

Frequently Asked Questions about Mickey Haefner

What years did Mickey Haefner play?
Mickey Haefner played in Major League Baseball from 1943 to 1950.
Was Mickey Haefner a pitcher?
Yes. Mickey Haefner pitched in the major leagues, recording 78 wins and 508 strikeouts.
How many home runs did Mickey Haefner hit?
Mickey Haefner hit 0 career home runs with 84 hits.