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. Trout • LAA 9.5
2. Donaldson • TOR 7.4
3. Machado • BAL 7.3
4. Cain • KCR 6.9
5. Kiermaier • TBR 6.9
6. Keuchel • HOU 6.6
7. Price • 2TM 6.2
8. Betts • BOS 6.0
9. Martinez • DET 5.5
10. Gray • OAK 5.4

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. Keuchel • HOU 6.6
2. Price • 2TM 6.3
3. Gray • OAK 5.4
4. Hernández • SEA 4.6
5. Kluber • CLE 4.3
6. Gallardo • TEX 4.1
7. Quintana • CHW 4.1
8. Archer • TBR 3.9
9. Carrasco • CLE 3.9
10. Betances • NYY 3.9

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. Price • 2TM 2.45
2. Keuchel • HOU 2.48
3. Gray • OAK 2.73
4. Kazmir • 2TM 3.10
5. Estrada • TOR 3.13
6. Archer • TBR 3.23
7. Chen • BAL 3.34
8. Odorizzi • TBR 3.35
9. Quintana • CHW 3.36
10. Sale • CHW 3.41

Wins

Wins

1. Keuchel • HOU 20
2. McHugh • HOU 19
3. Hernández • SEA 18
Price • 2TM 18
5. Lewis • TEX 17
6. Buehrle • TOR 15
Richards • LAA 15
8. Carrasco • CLE 14
Eovaldi • NYY 14
Gray • OAK 14
Salazar • CLE 14

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. Eovaldi • NYY .824
2. Price • 2TM .783
3. McHugh • HOU .731
4. Hutchison • TOR .722
5. Keuchel • HOU .714
6. Hernández • SEA .667
Gray • OAK .667
8. Lewis • TEX .654
9. Buehrle • TOR .652
10. Ramírez • TBR .647
Young • KCR .647

Walks & Hits per IP

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

1. Keuchel • HOU 1.017
2. Estrada • TOR 1.044
3. Kluber • CLE 1.054
4. Carrasco • CLE 1.073
5. Price • 2TM 1.076
6. Gray • OAK 1.082
7. Sale • CHW 1.088
8. Salazar • CLE 1.130
9. Ramírez • TBR 1.133
10. Archer • TBR 1.137

Hits per 9 IP

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

1. Estrada • TOR 6.663
2. Keuchel • HOU 7.177
3. Gray • OAK 7.183
4. Archer • TBR 7.429
5. Carrasco • CLE 7.546
6. Salazar • CLE 7.589
7. Kluber • CLE 7.662
8. Price • 2TM 7.761
9. Santiago • LAA 7.771
10. Bauer • CLE 7.773

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. Buehrle • TOR 1.495
2. Sale • CHW 1.812
3. Kluber • CLE 1.824
4. Lewis • TEX 1.847
5. Quintana • CHW 1.919
6. Price • 2TM 1.920
7. Chen • BAL 1.929
8. Keuchel • HOU 1.978
9. Porcello • BOS 1.988
10. Samardzija • CHW 2.061

Strikeouts per 9 IP

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

1. Sale • CHW 11.818
2. Archer • TBR 10.698
3. Carrasco • CLE 10.584
4. Kluber • CLE 9.932
5. Salazar • CLE 9.486
6. Price • 2TM 9.191
7. Bauer • CLE 8.693
8. Ventura • KCR 8.596
9. Hernández • SEA 8.524
10. Keuchel • HOU 8.379

Games Played

Games Played or Pitched

1. Jepsen • 2TM 75
2. Betances • NYY 74
Shaw • CLE 74
Wilson • NYY 74
5. Tolleson • TEX 73
6. Herrera • KCR 72
Salas • LAA 72
8. Duke • CHW 71
9. Allen • CLE 70
Geltz • TBR 70
Hardy • DET 70
Smith • SEA 70
Smith • LAA 70

Saves

Saves

1. Boxberger • TBR 41
2. Street • LAA 40
3. Miller • NYY 36
Britton • BAL 36
5. Tolleson • TEX 35
6. Allen • CLE 34
Robertson • CHW 34
8. Perkins • MIN 32
Holland • KCR 32
10. Gregerson • HOU 31

Innings Pitched

Innings Pitched

1. Keuchel • HOU 232.0
2. Kluber • CLE 222.0
3. Price • 2TM 220.1
4. Dickey • TOR 214.1
5. Samardzija • CHW 214.0
6. Archer • TBR 212.0
7. Sale • CHW 208.2
8. Gray • OAK 208.0
9. Richards • LAA 207.1
10. Quintana • CHW 206.1

Strikeouts

Strikeouts

1. Sale • CHW 274
2. Archer • TBR 252
3. Kluber • CLE 245
4. Price • 2TM 225
5. Carrasco • CLE 216
Keuchel • HOU 216
7. Salazar • CLE 195
8. Hernández • SEA 191
9. Quintana • CHW 177
10. Richards • LAA 176

Games Started

Games Started

1. Archer • TBR 34
2. Dickey • TOR 33
Gallardo • TEX 33
Keuchel • HOU 33
Lewis • TEX 33
Vólquez • KCR 33
7. Buehrle • TOR 32
Gibson • MIN 32
Jiménez • BAL 32
Kluber • CLE 32
McHugh • HOU 32
Miley • BOS 32
Quintana • CHW 32
Richards • LAA 32
Samardzija • CHW 32
Santiago • LAA 32
Price • 2TM 32

Complete Games

Complete Game

1. Kluber • CLE 4
Buehrle • TOR 4
3. Keuchel • HOU 3
Price • 2TM 3
Gray • OAK 3
Carrasco • CLE 3
7. Montgomery • SEA 2
Lewis • TEX 2
Samardzija • CHW 2
Hernández • SEA 2
Simón • DET 2
Tomlin • CLE 2
Dickey • TOR 2
Danks • CHW 2

Shutouts

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

1. Gray • OAK 2
Hernández • SEA 2
Montgomery • SEA 2
Keuchel • HOU 2
Samardzija • CHW 2
6. Buehrle • TOR 1
Carrasco • CLE 1
Cueto • KCR 1
Danks • CHW 1
Fiers • HOU 1
González • TEX 1
Hahn • OAK 1
Hill • BOS 1
Holland • TEX 1
Archer • TBR 1
Iwakuma • SEA 1
Lewis • TEX 1
Quintana • CHW 1
Richards • LAA 1
Sánchez • DET 1
Simón • DET 1
Verlander • DET 1
Weaver • LAA 1
Price • 2TM 1
Hutchison • TOR 1

Home Runs

Home Runs Hit/Allowed

1. Guthrie • KCR 29
Hughes • MIN 29
Samardzija • CHW 29
Sánchez • DET 29
Santiago • LAA 29
6. Chen • BAL 28
Sabathia • NYY 28
8. Lewis • TEX 26
9. Dickey • TOR 25
Porcello • BOS 25
Tanaka • NYY 25
Walker • SEA 25

Bases on Balls

Bases on Balls/Walks

1. Bauer • CLE 79
2. Richards • LAA 76
3. Vólquez • KCR 72
4. Rodón • CHW 71
Santiago • LAA 71
6. Gallardo • TEX 68
Jiménez • BAL 68
Simón • DET 68
9. Archer • TBR 66
10. Gibson • MIN 65

Hits

Hits/Hits Allowed

1. Samardzija • CHW 228
2. Quintana • CHW 218
3. Buehrle • TOR 214
4. Lewis • TEX 211
5. McHugh • HOU 207
6. Miley • BOS 201
Simón • DET 201
8. Pelfrey • MIN 198
9. Porcello • BOS 196
10. Danks • CHW 195
Dickey • TOR 195

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. Sale • CHW 6.524
2. Kluber • CLE 5.444
3. Carrasco • CLE 5.023
4. Price • 2TM 4.787
5. Keuchel • HOU 4.235
6. Quintana • CHW 4.023
7. Walker • SEA 3.925
8. Porcello • BOS 3.921
9. Archer • TBR 3.818
10. Chen • BAL 3.732

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. Pelfrey • MIN 0.601
2. Keuchel • HOU 0.659
3. Price • 2TM 0.694
4. Quintana • CHW 0.698
5. Vólquez • KCR 0.719
6. Gallardo • TEX 0.732
7. Gray • OAK 0.736
8. Ventura • KCR 0.771
9. Miley • BOS 0.790
10. Archer • TBR 0.807

Losses

Losses

1. Kluber • CLE 16
2. Chavez • OAK 15
Danks • CHW 15
Porcello • BOS 15
5. Archer • TBR 13
Samardzija • CHW 13
7. Bauer • CLE 12
Carrasco • CLE 12
González • BAL 12
Richards • LAA 12
Simón • DET 12
Weaver • LAA 12

Earned Runs

Earned Runs Allowed

1. Samardzija • CHW 118
2. Lewis • TEX 106
3. Simón • DET 105
4. Guthrie • KCR 98
5. Miley • BOS 96
Tillman • BAL 96
7. Porcello • BOS 94
8. Danks • CHW 93
Dickey • TOR 93
Hutchison • TOR 93

Wild Pitches

Wild Pitches

1. Richards • LAA 17
2. Karns • TBR 15
3. Simón • DET 14
4. Archer • TBR 13
Gray • OAK 13
6. Porcello • BOS 12
7. Duffy • KCR 11
Wilson • LAA 11
9. Gallardo • TEX 10
Hernández • SEA 10
Miley • BOS 10
Montgomery • SEA 10
Ventura • KCR 10

Hit By Pitch

Times Hit by a Pitch.

1. Martinez • TEX 13
Sale • CHW 13
3. Pelfrey • MIN 12
Samardzija • CHW 12
Weaver • LAA 12
6. Dickey • TOR 11
Hutchison • TOR 11
Jiménez • BAL 11
Kluber • CLE 11
Lewis • TEX 11

Batters Faced

Batters Faced

1. Keuchel • HOU 911
2. Samardzija • CHW 910
3. Price • 2TM 888
4. Kluber • CLE 886
5. Dickey • TOR 884
6. Archer • TBR 868
7. Richards • LAA 865
8. Quintana • CHW 862
9. Lewis • TEX 861
10. McHugh • HOU 859

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. Allen • CLE 58
Britton • BAL 58
3. Boxberger • TBR 53
Gregerson • HOU 53
Miller • NYY 53
Robertson • CHW 53
Tolleson • TEX 53
8. Street • LAA 51
9. Perkins • MIN 45
10. Holland • KCR 40

Adjusted ERA+

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

1. Price • 2TM 164
2. Keuchel • HOU 157
3. Gray • OAK 143
4. Estrada • TOR 131
5. Kazmir • 2TM 126
6. Salazar • CLE 125
7. Gallardo • TEX 124
8. Kluber • CLE 123
9. Chen • BAL 123
10. Archer • TBR 121

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. Sale • CHW 2.73
2. Price • 2TM 2.78
3. Carrasco • CLE 2.84
4. Archer • TBR 2.90
5. Keuchel • HOU 2.91
6. Kluber • CLE 2.97
7. Quintana • CHW 3.18
8. Gray • OAK 3.45
9. Ventura • KCR 3.57
10. McHugh • HOU 3.58

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. Keuchel • HOU 38
2. Price • 2TM 36
3. Gray • OAK 26
4. Davis • KCR 23
5. Betances • NYY 23
6. Estrada • TOR 20
7. Kluber • CLE 19
8. O'Day • BAL 18
9. Harris • HOU 15
10. Gallardo • TEX 15

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. Keuchel • HOU 4.2
2. Price • 2TM 4.0
3. Gray • OAK 2.8
4. Davis • KCR 2.4
5. Betances • NYY 2.4
6. Estrada • TOR 2.1
7. Kluber • CLE 2.0
8. O'Day • BAL 1.9
9. Gallardo • TEX 1.6
10. Young • KCR 1.6

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. Keuchel • HOU 39.84
2. Price • 2TM 36.01
3. Gray • OAK 29.43
4. Davis • KCR 29.16
5. Betances • NYY 25.41
6. Harris • HOU 22.17
7. Estrada • TOR 22.00
8. Kluber • CLE 21.75
9. Manship • CLE 18.95
10. Britton • BAL 18.16

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. Davis • KCR 4.3
2. Miller • NYY 4.1
3. Betances • NYY 4.1
4. Keuchel • HOU 4.1
5. Price • 2TM 3.7
6. Gray • OAK 3.5
7. Tolleson • TEX 3.5
8. Britton • BAL 3.1
9. Hernández • SEA 3.0
10. Street • LAA 2.8

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. Keuchel • HOU 4.8
2. Price • 2TM 3.5
3. Kluber • CLE 3.2
4. Gray • OAK 3.2
5. Estrada • TOR 2.9
6. Sale • CHW 2.5
7. Archer • TBR 2.5
8. Davis • KCR 2.2
9. Betances • NYY 2.2
10. Carrasco • CLE 2.0

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. Betances • NYY 3.5
2. Price • 2TM 3.4
3. Miller • NYY 3.2
4. Keuchel • HOU 3.1
5. Tolleson • TEX 2.9
6. Davis • KCR 2.6
7. Wilson • NYY 2.2
8. Estrada • TOR 2.1
9. Dyson • TEX 2.1
10. Street • LAA 1.9

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. Keuchel • HOU 4.5
2. Price • 2TM 4.0
3. Gray • OAK 3.2
4. Davis • KCR 3.0
5. Betances • NYY 2.6
6. Harris • HOU 2.3
7. Estrada • TOR 2.3
8. Kluber • CLE 2.2
9. Manship • CLE 1.9
10. Archer • TBR 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