American League Pitching Leaders

Wins Above Replacement--all

<strong>Wins Above Replacement</strong><br>A single number that presents the number of wins the player added<br>to the team above what a replacement player (think AAA or AAAA) would add.<br>Scale for a single-season: 8+ MVP Quality, 5+ All-Star Quality, 2+ Starter,<br>0-2 Reserve, < 0 Replacement Level <br>Developed by Sean Smith of BaseballProjection.com

1. Blyleven • MIN 9.7
2. Grich • BAL 8.3
3. Hiller • DET 7.9
4. Jackson • OAK 7.8
5. Perry • CLE 7.8
6. Ryan • CAL 7.7
7. Wood • CHW 7.5
8. Munson • NYY 7.2
9. Carew • MIN 7.0
North • OAK 7.0

WAR for Pitchers

<strong>Wins Above Replacement for Pitchers</strong><br>A single number that presents the number of wins the player added<br>to the team above what a replacement player (think AAA or AAAA) would add. This value includes defensive support and includes additional value for high leverage situations.<br>Scale: 8+ MVP Quality, 5+ All-Star Quality, 2+ Starter,<br>0-2 Reserve, < 0 Replacement Level <br> Developed by Sean Smith of BaseballProjection.com

1. Blyleven • MIN 9.7
2. Hiller • DET 7.9
3. Perry • CLE 7.8
4. Ryan • CAL 7.7
5. Wood • CHW 7.5
6. Palmer • BAL 6.3
7. Bahnsen • CHW 6.2
8. Lee • BOS 6.1
9. Singer • CAL 6.0
10. Coleman • DET 5.7

Earned Run Average

<strong>9 * ER / IP</strong><br>For recent years, leaders need 1 IP<br>per team game played.<br>Bold indicates lowest ERA using current stats<br><span class=glimmer>Gold</span> means awarded ERA title at end of year.

1. Palmer • BAL 2.40
2. Blyleven • MIN 2.52
3. Lee • BOS 2.75
4. Ryan • CAL 2.87
5. Medich • NYY 2.95
6. Holtzman • OAK 2.97
7. Stottlemyre • NYY 3.07
8. Colborn • MIL 3.18
9. McNally • BAL 3.21
10. Singer • CAL 3.22

Wins

Wins

1. Wood • CHW 24
2. Coleman • DET 23
3. Palmer • BAL 22
4. Holtzman • OAK 21
Hunter • OAK 21
Ryan • CAL 21
7. Blue • OAK 20
Blyleven • MIN 20
Colborn • MIL 20
Singer • CAL 20
Splittorff • KCR 20
Tiant • BOS 20

Win-Loss %

<strong>Win-Loss Percentage</strong><br>W / (W + L)<br>For players, leaders need one decision for every ten team games.<br>For managers, minimum to qualify for leading is 320 games.

1. Hunter • OAK .808
2. Palmer • BAL .710
3. Blue • OAK .690
4. McDaniel • NYY .667
5. Splittorff • KCR .645
6. Acosta • CHW .625
Colborn • MIL .625
8. Holtzman • OAK .618
9. Medich • NYY .609
10. Lee • BOS .607

Walks & Hits per IP

<strong>(BB + H)/IP</strong><br>For recent years, leaders need 1 IP<br>per team game played

1. Tiant • BOS 1.085
2. Blyleven • MIN 1.117
3. Hunter • OAK 1.135
4. Palmer • BAL 1.141
5. Holtzman • OAK 1.147
6. Blue • OAK 1.210
7. Colborn • MIL 1.222
8. Ryan • CAL 1.227
9. Lee • BOS 1.233
10. McNally • BAL 1.233

Hits per 9 IP

<strong>9 x H / IP</strong><br>For recent years, leaders need 1 IP<br>per team game played

1. Bibby • TEX 6.039
2. Ryan • CAL 6.571
3. Palmer • BAL 6.834
4. Tiant • BOS 7.180
5. Blue • OAK 7.305
6. Hunter • OAK 7.795
7. Singer • CAL 7.983
8. Blyleven • MIN 8.197
9. Perry • CLE 8.241
10. Medich • NYY 8.311

Bases On Balls per 9 IP

<strong>9 x BB / IP</strong><br>For recent years, leaders need 1 IP<br>per team game played

1. Kaat • 2TM 1.725
2. Blyleven • MIN 1.855
3. Holtzman • OAK 1.998
4. Wood • CHW 2.279
5. Lolich • DET 2.303
6. Peterson • NYY 2.392
7. Lee • BOS 2.403
8. Hunter • OAK 2.423
9. Perry • DET 2.438
10. Colborn • MIL 2.491

Strikeouts per 9 IP

<strong>9 x SO / IP</strong><br>For recent years, leaders need 1 IP<br>per team game played

1. Ryan • CAL 10.574
2. Bibby • TEX 7.736
3. Blyleven • MIN 7.145
4. Stone • CHW 7.043
5. Singer • CAL 6.871
6. Tiant • BOS 6.816
7. Busby • KCR 6.571
8. May • CAL 6.519
9. Fryman • DET 6.312
10. Coleman • DET 6.305

Games Played

Games Played or Pitched

1. Hiller • DET 65
2. Fingers • OAK 62
3. Bird • KCR 54
4. Knowles • OAK 52
5. Corbin • MIN 51
Forster • CHW 51
Lyle • NYY 51
Sells • CAL 51
9. Barber • CAL 50
10. Gogolewski • TEX 49
Wood • CHW 49

Saves

Saves

1. Hiller • DET 38
2. Lyle • NYY 27
3. Fingers • OAK 22
4. Bird • KCR 20
5. Acosta • CHW 18
6. Forster • CHW 16
7. Bolin • BOS 15
8. Corbin • MIN 14
9. Linzy • MIL 13
Sanders • 2TM 13

Innings Pitched

Innings Pitched

1. Wood • CHW 359.1
2. Perry • CLE 344.0
3. Ryan • CAL 326.0
4. Blyleven • MIN 325.0
5. Singer • CAL 315.2
6. Colborn • MIL 314.1
7. Lolich • DET 308.2
8. Holtzman • OAK 297.1
9. Palmer • BAL 296.1
10. Coleman • DET 288.1

Strikeouts

Strikeouts

1. Ryan • CAL 383
2. Blyleven • MIN 258
3. Singer • CAL 241
4. Perry • CLE 238
5. Lolich • DET 214
6. Tiant • BOS 206
7. Coleman • DET 202
8. Wood • CHW 199
9. Busby • KCR 174
10. Blue • OAK 158
Palmer • BAL 158

Games Started

Games Started

1. Wood • CHW 48
2. Bahnsen • CHW 42
Lolich • DET 42
4. Perry • CLE 41
5. Blyleven • MIN 40
Coleman • DET 40
Holtzman • OAK 40
Singer • CAL 40
Tidrow • CLE 40
10. Ryan • CAL 39

Complete Games

Complete Game

1. Perry • CLE 29
2. Ryan • CAL 26
3. Blyleven • MIN 25
4. Tiant • BOS 23
5. Colborn • MIL 22
6. Wood • CHW 21
7. Palmer • BAL 19
Singer • CAL 19
Stottlemyre • NYY 19
10. Lee • BOS 18

Shutouts

Shutouts<br>No runs allowed and a complete game.

1. Blyleven • MIN 9
2. Perry • CLE 7
3. Palmer • BAL 6
4. Bahnsen • CHW 4
McNally • BAL 4
May • CAL 4
Holtzman • OAK 4
Ryan • CAL 4
Curtis • BOS 4
Stottlemyre • NYY 4
Blue • OAK 4
Colborn • MIL 4
Wood • CHW 4

Home Runs

Home Runs Hit/Allowed

1. Hunter • OAK 39
2. Lolich • DET 35
3. Perry • CLE 34
4. Coleman • DET 32
Tiant • BOS 32
6. Pattin • BOS 31
Tidrow • CLE 31
8. Slaton • MIL 30
Kaat • 2TM 30
10. Cuellar • BAL 29

Bases on Balls

Bases on Balls/Walks

1. Ryan • CAL 162
2. Singer • CAL 130
3. Bahnsen • CHW 117
4. Perry • CLE 115
5. Palmer • BAL 113
6. Bibby • TEX 106
7. Blue • OAK 105
Busby • KCR 105
9. Slaton • MIL 99
10. Tidrow • CLE 95

Hits

Hits/Hits Allowed

1. Wood • CHW 381
2. Lolich • DET 315
Perry • CLE 315
4. Colborn • MIL 297
5. Blyleven • MIN 296
6. Bahnsen • CHW 290
7. Tidrow • CLE 289
8. Coleman • DET 283
9. Singer • CAL 280
10. Splittorff • KCR 279

Strikeouts / Base On Balls

<strong>SO/W or SO/BB</strong><br>For recent years, pitching leaders need 1 IP<br>per team game played.<br>No batting leaders computed.

1. Blyleven • MIN 3.851
2. Lolich • DET 2.709
3. Tiant • BOS 2.641
4. Kaat • 2TM 2.535
5. Holtzman • OAK 2.379
6. Ryan • CAL 2.364
7. Wood • CHW 2.187
8. Coleman • DET 2.172
9. Perry • CLE 2.070
10. Medich • NYY 1.959

Home Runs per 9 IP

<strong>9 x HR / IP</strong><br>For recent years, leaders need 1 IP<br>per team game played

1. Forster • CHW 0.365
2. Singer • CAL 0.428
3. Stottlemyre • NYY 0.429
4. Blyleven • MIN 0.443
5. Palmer • BAL 0.486
6. Ryan • CAL 0.497
7. McNally • BAL 0.541
8. Stone • CHW 0.561
9. Colborn • MIL 0.601
10. Wood • CHW 0.626

Losses

Losses

1. Bahnsen • CHW 21
2. Wood • CHW 20
3. Perry • CLE 19
Wright • CAL 19
5. Blyleven • MIN 17
May • CAL 17
McNally • BAL 17
8. Ryan • CAL 16
Stottlemyre • NYY 16
Tidrow • CLE 16

Earned Runs

Earned Runs Allowed

1. Wood • CHW 138
2. Tidrow • CLE 135
3. Lolich • DET 131
4. Perry • CLE 129
5. Splittorff • KCR 116
6. Slaton • MIL 114
7. Coleman • DET 113
Singer • CAL 113
9. Bahnsen • CHW 112
Busby • KCR 112

Wild Pitches

Wild Pitches

1. Perry • CLE 17
2. Blue • OAK 15
Ryan • CAL 15
4. Strom • CLE 13
5. Holtzman • OAK 12
Lolich • DET 12
7. Slaton • MIL 11
Timmermann • 2TM 11
9. Bahnsen • CHW 10
Bibby • TEX 10
Strahler • DET 10

Hit By Pitch

Times Hit by a Pitch.

1. Coleman • DET 10
2. Blyleven • MIN 9
Singer • CAL 9
4. Pattin • BOS 8
Piña • OAK 8
Tidrow • CLE 8
Wilcox • CLE 8
8. Acosta • CHW 7
Alexander • BAL 7
Drago • KCR 7
Peterson • NYY 7
Ryan • CAL 7
Stone • CHW 7
Tiant • BOS 7
Wood • CHW 7
Bosman • 2TM 7

Batters Faced

Batters Faced

1. Wood • CHW 1,531
2. Perry • CLE 1,410
3. Ryan • CAL 1,355
4. Singer • CAL 1,348
5. Blyleven • MIN 1,321
6. Colborn • MIL 1,287
7. Lolich • DET 1,286
8. Coleman • DET 1,219
9. Bahnsen • CHW 1,218
10. Holtzman • OAK 1,210

Games Finished

Games Finished<br>Credited to the last pitcher to appear for a team in a game.<br>Complete Games are not counted as Games Finished.

1. Hiller • DET 60
2. Fingers • OAK 49
3. Lyle • NYY 45
4. Acosta • CHW 42
5. Bird • KCR 41
6. Sells • CAL 37
7. Sanders • 2TM 34
8. Jackson • BAL 33
Linzy • MIL 33
10. McDaniel • NYY 32

Adjusted ERA+

<strong>ERA+</strong><br>100*[lgERA/ERA]<br>Adjusted to the player&#x2019;s ballpark(s).

1. Blyleven • MIN 156
2. Palmer • BAL 155
3. Lee • BOS 146
4. Medich • NYY 125
5. Forster • CHW 124
6. Ryan • CAL 123
7. Tiant • BOS 120
8. Holtzman • OAK 120
9. Stottlemyre • NYY 120
10. Colborn • MIL 118

Fielding Independent Pitching

<strong>Fielding Independent Pitching</strong><br>this stat measures a pitcher's effectiveness at preventing HR, BB, HBP and causing SO<br><tt>(13*HR + 3*(BB+HBP) - 2*SO)/IP + Constant<sub>lg</sub></tt><br>The constant is set so that each season major-league average FIP is the same as the major-league avg ERA

1. Blyleven • MIN 2.32
2. Ryan • CAL 2.49
3. Singer • CAL 2.98
4. Forster • CHW 3.06
5. Holtzman • OAK 3.18
6. Wood • CHW 3.18
7. Stone • CHW 3.33
8. Palmer • BAL 3.38
9. Stottlemyre • NYY 3.41
10. Medich • NYY 3.42

Adj. Pitching Runs

<strong>Adjusted Pitching Runs</strong><br>A set of formulas developed by Gary Gillette, Pete Palmer and others<br>that estimates a pitcher&#x2019;s total contributions<br>to a team&#x2019;s runs total via linear weights.<br>0.0 is an avg performance, <0 is worse than avg and >0 is better than avg

1. Blyleven • MIN 47
2. Palmer • BAL 46
3. Lee • BOS 37
4. Hiller • DET 35
5. Ryan • CAL 28
6. Tiant • BOS 23
7. Reynolds • BAL 23
8. Perry • CLE 22
9. Holtzman • OAK 22
10. Medich • NYY 21

Adj. Pitching Wins

<strong>Adjusted Pitching Wins</strong><br>A set of formulas developed by Gary Gillette, Pete Palmer and others<br>that estimates a pitcher&#x2019;s total contributions<br>to a team&#x2019;s wins with his arm.<br>0.0 is an avg performance, <0 is worse than avg and >0 is better than avg

1. Blyleven • MIN 5.2
2. Palmer • BAL 5.1
3. Lee • BOS 4.1
4. Hiller • DET 3.7
5. Ryan • CAL 2.9
6. Tiant • BOS 2.5
7. Reynolds • BAL 2.4
8. Perry • CLE 2.3
9. Holtzman • OAK 2.3
10. Medich • NYY 2.2

Base-Out Runs Saved (RE24)

<strong>Base-Out Runs Saved</strong><br>Given the bases occupied/out situation, how many runs did the pitcher<br>save in the resulting play. Compared to average, so 0 is average, and<br>above 0 is better than average

1. Palmer • BAL 57.75
2. Hiller • DET 53.67
3. Blyleven • MIN 50.62
4. Lee • BOS 40.70
5. Ryan • CAL 36.95
6. Tiant • BOS 30.27
7. McNally • BAL 29.98
8. Perry • CLE 25.72
9. Holtzman • OAK 25.67
10. Medich • NYY 24.80

Win Probability Added (WPA)

<strong>Win Probability Added by Pitcher</strong><br>Given average teams, this is the change in probability.<br>See <a href='https://www.baseball-reference.com/about/wpa.shtml'>Win Expectancy explainer</a> for details.

1. Hiller • DET 8.4
2. Ryan • CAL 6.6
3. Palmer • BAL 5.8
4. Lee • BOS 5.0
5. Acosta • CHW 4.2
6. Singer • CAL 4.2
7. Tiant • BOS 4.0
8. Blyleven • MIN 3.4
9. Fingers • OAK 3.2
10. Holtzman • OAK 3.1

Sit. Wins Saved (WPA/LI)

<strong>Situational Wins (WPA/LI)</strong><br>It is the sum of WPA divided by the leverage index for each play.<br>WPA depends greatly on the context of the at bats.<br>This stat does not.

1. Palmer • BAL 5.0
2. Blyleven • MIN 4.6
3. Ryan • CAL 3.7
4. Hiller • DET 3.5
5. Tiant • BOS 3.3
6. McNally • BAL 3.0
7. Lee • BOS 2.7
8. Perry • CLE 2.6
9. Colborn • MIL 2.5
10. Holtzman • OAK 2.5

Championship WPA (cWPA)

<strong>Championship Win Probability Added by Pitcher</strong><br>Given average teams, this is the change in probability of winning the World Series, displayed in percentage points.<br>See <a href='https://www.baseball-reference.com/about/wpa.shtml'>Win Expectancy explainer</a> for details.

1. Hiller • DET 7.7
2. Palmer • BAL 7.7
3. McDaniel • NYY 6.2
4. Lee • BOS 4.3
5. Fingers • OAK 4.0
6. Tiant • BOS 3.8
7. McNally • BAL 3.4
8. Ryan • CAL 3.4
9. Bahnsen • CHW 3.3
10. Moret • BOS 3.2

Base-Out Wins Saved (REW)

<strong>Base-Out Wins Saved</strong><br>This is the number of wins above average the player was worth by their performance<br>measured by the 24 base-out situations.

1. Palmer • BAL 6.6
2. Hiller • DET 5.6
3. Blyleven • MIN 5.5
4. Lee • BOS 4.3
5. Ryan • CAL 4.2
6. McNally • BAL 3.3
7. Tiant • BOS 3.2
8. Holtzman • OAK 2.8
9. Medich • NYY 2.7
10. Perry • CLE 2.7

A ** by the stat's value indicates the player had fewer than the required number of at bats or plate appearances for the BA, OBP, SLG or OPS title that year. In order to rank the player, the necessary number of hitless at bats were added to the player's season total. The value printed here is their actual value and not the value used to rank them, therefore some numbers may appear out of order.

For rate stats, generally a minimum of 3.1 Plate Appearances/Team Game (batting), 1.0 IP/Team Game (pitching), 0.67 Gm and Chances/Team Game (fielding), 0.2 SB att/Team Game (catchers), 0.1 SB att/Team Game (baserunners only since 1951), and 0.1 decision/Team Game (W-L%) is needed for single-season leaderboards. For pitcher fielding the minimums are reduced by a third. For LF, CF, RF fielding stats, we only have reliable data since 1898, so all leaders are since 1898. Explanation of min. requirements