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. Yastrzemski • BOS 9.5
2. McDowell • CLE 7.9
3. Fregosi • CAL 7.7
4. Harper • MIL 7.4
5. Oliva • MIN 7.0
6. White • NYY 6.8
7. Smith • BOS 6.7
8. Palmer • BAL 6.4
Rodríguez • 2TM 6.4
10. Bando • OAK 6.1

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. McDowell • CLE 8.3
2. Palmer • BAL 6.4
3. John • CHW 5.5
4. Culp • BOS 5.1
Pattin • MIL 5.1
6. Sanders • MIL 4.6
7. Grant • OAK 4.5
Johnson • KCR 4.5
9. Lolich • DET 4.5
10. Bosman • WSA 4.3

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. Seguí • OAK 2.56
2. Palmer • BAL 2.71
3. Wright • CAL 2.83
4. Peterson • NYY 2.90
5. McDowell • CLE 2.92
6. Bosman • WSA 3.00
7. Messersmith • CAL 3.01
8. Perry • MIN 3.04
9. Culp • BOS 3.04
10. Johnson • KCR 3.07

Wins

Wins

1. Cuellar • BAL 24
McNally • BAL 24
Perry • MIN 24
4. Wright • CAL 22
5. McDowell • CLE 20
Palmer • BAL 20
Peterson • NYY 20
8. Hunter • OAK 18
9. Culp • BOS 17
10. Bosman • WSA 16
Dobson • OAK 16
Murphy • CAL 16
Peters • BOS 16

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. Cuellar • BAL .750
2. McNally • BAL .727
3. Palmer • BAL .667
Perry • MIN .667
5. Siebert • BOS .652
6. Hall • MIN .647
Wright • CAL .647
8. Peterson • NYY .645
9. Cain • DET .632
10. McDowell • CLE .625

Walks & Hits per IP

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

1. Peterson • NYY 1.102
2. Perry • MIN 1.130
3. Messersmith • CAL 1.140
4. Cuellar • BAL 1.149
5. Blyleven • MIN 1.159
6. Pattin • MIL 1.179
7. Palmer • BAL 1.190
8. Siebert • BOS 1.199
9. McNally • BAL 1.199
10. Culp • BOS 1.202

Hits per 9 IP

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

1. Messersmith • CAL 6.658
2. McDowell • CLE 6.964
3. Seguí • OAK 7.222
4. Johnson • KCR 7.486
5. Culp • BOS 7.556
6. Dobson • OAK 7.753
7. Palmer • BAL 7.761
8. Wright • CAL 7.803
9. Coleman • WSA 7.820
10. Blyleven • MIN 7.848

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. Peterson • NYY 1.383
2. Perry • MIN 1.841
3. Cox • WSA 2.059
4. Cuellar • BAL 2.086
5. Horlen • CHW 2.141
6. Kaat • MIN 2.266
7. McNally • BAL 2.372
8. Siebert • BOS 2.425
9. Hunter • OAK 2.539
10. Blyleven • MIN 2.579

Strikeouts per 9 IP

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

1. McDowell • CLE 8.970
2. Johnson • KCR 8.664
3. Cain • DET 7.771
4. Lolich • DET 7.592
5. Messersmith • CAL 7.490
6. Blyleven • MIN 7.409
7. May • CAL 7.073
8. Culp • BOS 7.054
9. Peters • BOS 6.293
10. Coleman • WSA 6.256

Games Played

Games Played or Pitched

1. Wood • CHW 77
2. Grant • OAK 72
3. Knowles • WSA 71
4. Williams • MIN 68
5. Fisher • CAL 67
Perranoski • MIN 67
7. Locker • 2TM 66
8. Lyle • BOS 63
9. Lindblad • OAK 62
McDaniel • NYY 62
Tatum • CAL 62

Saves

Saves

1. Perranoski • MIN 34
2. McDaniel • NYY 29
3. Timmermann • DET 27
Knowles • WSA 27
5. Grant • OAK 24
6. Wood • CHW 21
7. Lyle • BOS 20
8. Tatum • CAL 17
9. Aker • NYY 16
10. Williams • MIN 15

Innings Pitched

Innings Pitched

1. McDowell • CLE 305.0
Palmer • BAL 305.0
3. Cuellar • BAL 297.2
4. McNally • BAL 296.0
5. Perry • MIN 278.2
6. Lolich • DET 272.2
7. Stottlemyre • NYY 271.0
8. John • CHW 269.1
9. Dobson • OAK 267.0
10. Hunter • OAK 262.1

Strikeouts

Strikeouts

1. McDowell • CLE 304
2. Lolich • DET 230
3. Johnson • KCR 206
4. Palmer • BAL 199
5. Culp • BOS 197
6. Cuellar • BAL 190
7. McNally • BAL 185
8. Hall • MIN 184
9. Hunter • OAK 178
10. Perry • MIN 168

Games Started

Games Started

1. Cuellar • BAL 40
Dobson • OAK 40
Hunter • OAK 40
McNally • BAL 40
Perry • MIN 40
6. Lolich • DET 39
McDowell • CLE 39
Palmer • BAL 39
Wright • CAL 39
10. Murphy • CAL 38

Complete Games

Complete Game

1. Cuellar • BAL 21
2. McDowell • CLE 19
3. Palmer • BAL 17
4. McNally • BAL 16
5. Culp • BOS 15
6. Stottlemyre • NYY 14
7. Lolich • DET 13
Dobson • OAK 13
Perry • MIN 13
10. Pattin • MIL 11

Shutouts

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

1. Dobson • OAK 5
Palmer • BAL 5
3. Cuellar • BAL 4
Perry • MIN 4
Peters • BOS 4
6. John • CHW 3
Lolich • DET 3
Rooker • KCR 3
Bosman • WSA 3
10. Peterson • NYY 2
Niekro • DET 2
Seguí • OAK 2
Murphy • CAL 2
Siebert • BOS 2
May • CAL 2
Wright • CAL 2
Bahnsen • NYY 2
Hardin • BAL 2
Blue • OAK 2

Home Runs

Home Runs Hit/Allowed

1. Cuellar • BAL 34
2. Krausse • MIL 33
3. Dobson • OAK 32
Hunter • OAK 32
Murphy • CAL 32
6. McNally • BAL 29
Siebert • BOS 29
8. Niekro • DET 28
9. Cox • WSA 27
Hand • CLE 27
Lolich • DET 27

Bases on Balls

Bases on Balls/Walks

1. McDowell • CLE 131
2. Lolich • DET 109
3. Rooker • KCR 102
4. John • CHW 101
5. Odom • OAK 100
Palmer • BAL 100
7. Cain • DET 98
8. Dobson • OAK 92
9. Culp • BOS 91
10. Coleman • WSA 89

Hits

Hits/Hits Allowed

1. McNally • BAL 277
2. Cuellar • BAL 273
3. Lolich • DET 272
4. Palmer • BAL 263
5. Stottlemyre • NYY 262
6. Perry • MIN 258
7. Hunter • OAK 253
John • CHW 253
9. Janeski • CHW 247
Peterson • NYY 247

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. Peterson • NYY 3.175
2. Perry • MIN 2.947
3. Blyleven • MIN 2.872
4. Cuellar • BAL 2.754
5. Johnson • KCR 2.512
6. Hunter • OAK 2.405
7. McNally • BAL 2.372
8. Siebert • BOS 2.367
9. McDowell • CLE 2.321
10. Pattin • MIL 2.268

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. Rooker • KCR 0.486
2. Seguí • OAK 0.500
3. Palmer • BAL 0.620
4. Bosman • WSA 0.624
5. John • CHW 0.635
6. Perry • MIN 0.646
7. McDowell • CLE 0.738
8. Cain • DET 0.747
9. Drago • KCR 0.750
10. Johnson • KCR 0.757

Losses

Losses

1. Lolich • DET 19
2. Krausse • MIL 18
3. Janeski • CHW 17
John • CHW 17
5. Horlen • CHW 16
6. Brabender • MIL 15
Dobson • OAK 15
Drago • KCR 15
Rooker • KCR 15
10. Culp • BOS 14
Hunter • OAK 14
Knowles • WSA 14

Earned Runs

Earned Runs Allowed

1. Cuellar • BAL 115
Lolich • DET 115
3. Krausse • MIL 114
4. Dobson • OAK 111
Hunter • OAK 111
6. Janeski • CHW 109
7. Murphy • CAL 107
8. McNally • BAL 106
9. Drago • KCR 100
Peters • BOS 100

Wild Pitches

Wild Pitches

1. John • CHW 17
McDowell • CLE 17
3. Peters • BOS 16
4. Coleman • WSA 14
Lolich • DET 14
Odom • OAK 14
7. Fitzmorris • KCR 12
8. Kaat • MIN 11
9. Culp • BOS 10
Dobson • OAK 10
Palmer • BAL 10
Stottlemyre • NYY 10

Hit By Pitch

Times Hit by a Pitch.

1. Culp • BOS 11
Johnson • KCR 11
3. Hunter • OAK 9
John • CHW 9
Perry • MIN 9
Zepp • MIN 9
Moore • 2TM 9
8. Odom • OAK 8
9. Cain • DET 7
Drago • KCR 7
McDowell • CLE 7
McNally • BAL 7
Murphy • CAL 7
Peters • BOS 7
Wright • CAL 7
Wright • KCR 7

Batters Faced

Batters Faced

1. McDowell • CLE 1,257
Palmer • BAL 1,257
3. McNally • BAL 1,218
4. Cuellar • BAL 1,214
5. Lolich • DET 1,181
6. Perry • MIN 1,141
7. Stottlemyre • NYY 1,136
8. John • CHW 1,133
9. Hunter • OAK 1,116
10. Dobson • OAK 1,112

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. Wood • CHW 62
2. Perranoski • MIN 52
3. McDaniel • NYY 51
4. Grant • OAK 49
Knowles • WSA 49
6. Timmermann • DET 43
7. Lyle • BOS 40
8. Fisher • CAL 36
Williams • MIN 36
10. Watt • BAL 35

Adjusted ERA+

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

1. Seguí • OAK 139
2. Palmer • BAL 134
3. McDowell • CLE 134
4. Culp • BOS 131
5. Wright • CAL 128
6. Perry • MIN 125
7. Peterson • NYY 122
8. Johnson • KCR 121
9. Messersmith • CAL 120
10. Blyleven • MIN 119

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. McDowell • CLE 3.07
2. Perry • MIN 3.08
3. Johnson • KCR 3.11
4. Palmer • BAL 3.22
5. Blyleven • MIN 3.24
6. Bosman • WSA 3.33
7. Peterson • NYY 3.36
8. Pattin • MIL 3.36
9. Culp • BOS 3.43
10. Seguí • OAK 3.48

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. Palmer • BAL 35
2. McDowell • CLE 33
3. Grant • OAK 26
4. Hall • MIN 23
5. Wright • CAL 21
6. Culp • BOS 21
7. Sanders • MIL 21
8. Perry • MIN 20
9. Williams • MIN 20
10. McDaniel • NYY 20

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. Palmer • BAL 3.8
2. McDowell • CLE 3.7
3. Grant • OAK 2.7
4. Hall • MIN 2.4
5. Culp • BOS 2.3
6. Wright • CAL 2.3
7. Sanders • MIL 2.2
8. Perry • MIN 2.2
9. Williams • MIN 2.1
10. McDaniel • NYY 2.1

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 43.88
2. McDowell • CLE 41.69
3. Grant • OAK 35.03
4. Hall • MIN 34.42
5. McNally • BAL 27.77
6. McDaniel • NYY 23.43
7. Seguí • OAK 21.75
8. Culp • BOS 20.11
9. Perry • MIN 17.86
10. Hargan • CLE 17.64

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. McDaniel • NYY 5.7
2. Grant • OAK 5.2
3. Palmer • BAL 4.1
4. McDowell • CLE 4.1
5. Hall • MIN 4.0
6. McNally • BAL 3.3
7. Perry • MIN 3.2
8. Williams • MIN 3.1
9. Messersmith • CAL 2.6
10. Cuellar • BAL 2.5

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. Perry • MIN 3.7
2. Palmer • BAL 3.6
3. McDowell • CLE 3.5
4. Hall • MIN 3.3
5. McDaniel • NYY 3.1
6. Grant • OAK 2.9
7. Sanders • MIL 2.4
8. Williams • MIN 2.3
9. McNally • BAL 2.2
10. Peterson • NYY 2.1

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. Williams • MIN 5.8
2. Hall • MIN 5.0
3. Messersmith • CAL 4.0
4. Palmer • BAL 4.0
5. Perry • MIN 3.6
6. Grant • OAK 3.1
7. McDaniel • NYY 3.0
8. Richert • BAL 2.1
9. Perranoski • MIN 1.8
10. Cuellar • BAL 1.7

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 4.9
2. McDowell • CLE 4.5
3. Grant • OAK 3.8
4. Hall • MIN 3.7
5. McNally • BAL 3.0
6. McDaniel • NYY 2.6
7. Seguí • OAK 2.4
8. Culp • BOS 2.1
9. Bosman • WSA 1.9
10. Perry • MIN 1.9

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