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. Altuve • HOU 8.1
2. Judge • NYY 8.1
3. Simmons • LAA 8.0
4. Kluber • CLE 7.9
5. Verlander • 2TM 6.9
6. Ramírez • CLE 6.9
7. Trout • LAA 6.9
8. Correa • HOU 6.7
9. Betts • BOS 6.5
10. Schoop • BAL 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. Kluber • CLE 7.9
2. Verlander • 2TM 6.9
3. Sale • BOS 5.9
4. Severino • NYY 5.2
5. Carrasco • CLE 5.2
6. Stroman • TOR 5.1
7. Santana • MIN 4.9
8. Cashner • TEX 4.6
9. Vargas • KCR 4.1
10. Fulmer • DET 4.0

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. Kluber • CLE 2.25
2. Sale • BOS 2.90
3. Severino • NYY 2.98
4. Stroman • TOR 3.09
5. Santana • MIN 3.28
6. Carrasco • CLE 3.29
7. Pomeranz • BOS 3.32
8. Verlander • 2TM 3.36
9. Cashner • TEX 3.40
10. Gray • 2TM 3.55

Wins

Wins

1. Carrasco • CLE 18
Kluber • CLE 18
Vargas • KCR 18
4. Bauer • CLE 17
Pomeranz • BOS 17
Sale • BOS 17
7. Santana • MIN 16
8. Verlander • 2TM 15
9. Berríos • MIN 14
Keuchel • HOU 14
Morton • HOU 14
Sabathia • NYY 14
Severino • NYY 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. Kluber • CLE .818
2. Carrasco • CLE .750
3. Pomeranz • BOS .739
4. Sabathia • NYY .737
Keuchel • HOU .737
6. Paxton • SEA .706
7. Severino • NYY .700
8. Sale • BOS .680
9. Santana • MIN .667
Morton • HOU .667
Clevinger • CLE .667

Walks & Hits per IP

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

1. Kluber • CLE 0.869
2. Sale • BOS 0.970
3. Severino • NYY 1.040
4. Carrasco • CLE 1.095
5. Santana • MIN 1.126
6. Fulmer • DET 1.154
7. Verlander • 2TM 1.175
8. Bundy • BAL 1.196
9. Gray • 2TM 1.207
10. Cobb • TBR 1.221

Hits per 9 IP

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

1. Kluber • CLE 6.231
2. Sale • BOS 6.928
3. Severino • NYY 6.983
4. Verlander • 2TM 7.427
5. Santana • MIN 7.538
6. Gray • 2TM 7.706
7. Carrasco • CLE 7.785
8. Bundy • BAL 8.063
9. Fulmer • DET 8.198
10. Cashner • TEX 8.424

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. Kluber • CLE 1.591
2. Sale • BOS 1.806
3. Tanaka • NYY 2.069
4. Carrasco • CLE 2.070
5. Porcello • BOS 2.125
6. Fulmer • DET 2.186
7. Cobb • TBR 2.208
8. Severino • NYY 2.374
9. Hammel • KCR 2.396
10. Santana • MIN 2.598

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 • BOS 12.933
2. Kluber • CLE 11.710
3. Archer • TBR 11.149
4. Severino • NYY 10.707
5. Carrasco • CLE 10.170
6. Bauer • CLE 10.004
7. Tanaka • NYY 9.791
8. Verlander • 2TM 9.568
9. Pomeranz • BOS 9.017
10. Gausman • BAL 8.630

Games Played

Games Played or Pitched

1. Moylan • KCR 79
Shaw • CLE 79
3. Jennings • 2TM 77
4. Tepera • TOR 73
5. Coulombe • OAK 72
6. Greene • DET 71
Parker • LAA 71
8. Barnes • BOS 70
Claudio • TEX 70
Hendriks • OAK 70
Loup • TOR 70

Saves

Saves

1. Colomé • TBR 47
2. Osuna • TOR 39
3. Kimbrel • BOS 35
4. Giles • HOU 34
Díaz • SEA 34
6. Allen • CLE 30
7. Kintzler • MIN 28
8. Herrera • KCR 26
9. Chapman • NYY 22
10. Norris • LAA 19

Innings Pitched

Innings Pitched

1. Sale • BOS 214.1
2. Santana • MIN 211.1
3. Verlander • 2TM 206.0
4. Kluber • CLE 203.2
5. Porcello • BOS 203.1
6. Archer • TBR 201.0
Stroman • TOR 201.0
8. Carrasco • CLE 200.0
9. Severino • NYY 193.1
10. Gausman • BAL 186.2

Strikeouts

Strikeouts

1. Sale • BOS 308
2. Kluber • CLE 265
3. Archer • TBR 249
4. Severino • NYY 230
5. Carrasco • CLE 226
6. Verlander • 2TM 219
7. Bauer • CLE 196
8. Tanaka • NYY 194
9. Porcello • BOS 181
10. Gausman • BAL 179

Games Started

Games Started

1. Archer • TBR 34
Gausman • BAL 34
3. Estrada • TOR 33
Nolasco • LAA 33
Porcello • BOS 33
Santana • MIN 33
Stroman • TOR 33
Verlander • 2TM 33
9. Carrasco • CLE 32
Hammel • KCR 32
Miley • BAL 32
Pérez • TEX 32
Pomeranz • BOS 32
Sale • BOS 32
Vargas • KCR 32

Complete Games

Complete Game

1. Kluber • CLE 5
Santana • MIN 5
3. Stroman • TOR 2
Porcello • BOS 2
5. Bundy • BAL 1
Carrasco • CLE 1
Colón • MIN 1
Fister • BOS 1
Fulmer • DET 1
Griffin • TEX 1
Hamels • TEX 1
Johnson • BOS 1
Keuchel • HOU 1
Boyd • DET 1
Miranda • SEA 1
Nolasco • LAA 1
Sale • BOS 1
Tanaka • NYY 1
Tomlin • CLE 1
Vargas • KCR 1
Gray • 2TM 1
Mengden • OAK 1

Shutouts

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

1. Kluber • CLE 3
Santana • MIN 3
3. Boyd • DET 1
Bundy • BAL 1
Griffin • TEX 1
Johnson • BOS 1
Mengden • OAK 1
Nolasco • LAA 1
Tanaka • NYY 1
Vargas • KCR 1

Home Runs

Home Runs Hit/Allowed

1. Porcello • BOS 38
2. Miranda • SEA 37
3. Nolasco • LAA 35
Tanaka • NYY 35
5. Kennedy • KCR 34
6. Jiménez • BAL 33
7. Fiers • HOU 32
8. Estrada • TOR 31
Holland • CHW 31
Santana • MIN 31

Bases on Balls

Bases on Balls/Walks

1. Miley • BAL 93
2. Holland • CHW 75
3. Verlander • 2TM 72
4. Estrada • TOR 71
Gausman • BAL 71
6. Pomeranz • BOS 69
7. Cashner • TEX 64
8. Miranda • SEA 63
Pérez • TEX 63
10. Fiers • HOU 62
Pelfrey • CHW 62
Stroman • TOR 62

Hits

Hits/Hits Allowed

1. Porcello • BOS 236
2. Pérez • TEX 221
3. Hammel • KCR 209
4. Gausman • BAL 208
5. Nolasco • LAA 205
6. Zimmermann • DET 204
7. Stroman • TOR 201
8. Archer • TBR 193
9. Estrada • TOR 186
10. Gibson • MIN 182

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. Kluber • CLE 7.361
2. Sale • BOS 7.163
3. Carrasco • CLE 4.913
4. Tanaka • NYY 4.732
5. Severino • NYY 4.510
6. Archer • TBR 4.150
7. Porcello • BOS 3.771
8. Bauer • CLE 3.267
9. Verlander • 2TM 3.042
10. Hammel • KCR 3.021

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. Fulmer • DET 0.711
2. Cashner • TEX 0.810
3. Kluber • CLE 0.928
4. Stroman • TOR 0.940
5. Carrasco • CLE 0.945
6. Severino • NYY 0.978
7. Pomeranz • BOS 0.985
8. Sale • BOS 1.008
9. Gray • 2TM 1.053
10. Cobb • TBR 1.104

Losses

Losses

1. Porcello • BOS 17
2. Miley • BAL 15
Nolasco • LAA 15
4. Holland • CHW 14
5. Biagini • TOR 13
Hammel • KCR 13
Kennedy • KCR 13
Zimmermann • DET 13
González • 2TM 13
10. Archer • TBR 12
Fulmer • DET 12
Gausman • BAL 12
Pelfrey • CHW 12
Pérez • TEX 12
Tanaka • NYY 12
Gray • 2TM 12

Earned Runs

Earned Runs Allowed

1. Jiménez • BAL 108
Zimmermann • DET 108
3. Hammel • KCR 106
4. Porcello • BOS 105
5. Estrada • TOR 103
6. Nolasco • LAA 99
Pérez • TEX 99
8. Miley • BAL 98
9. Gausman • BAL 97
10. Tanaka • NYY 94

Wild Pitches

Wild Pitches

1. Archer • TBR 15
Paxton • SEA 15
3. Santana • MIN 12
4. Fiers • HOU 11
Tillman • BAL 11
Clippard • 3TM 11
Gray • 2TM 11
8. Carrasco • CLE 10
Cashner • TEX 10
Gossett • OAK 10

Hit By Pitch

Times Hit by a Pitch.

1. Berríos • MIN 13
Fiers • HOU 13
Morton • HOU 13
4. Betances • NYY 11
Hamels • TEX 11
McCullers • HOU 11
7. Carrasco • CLE 10
Manaea • OAK 10
Pelfrey • CHW 10
10. Cashner • TEX 9
Hammel • KCR 9
Junis • KCR 9

Batters Faced

Batters Faced

1. Porcello • BOS 885
2. Santana • MIN 864
3. Archer • TBR 852
4. Sale • BOS 851
5. Verlander • 2TM 849
6. Stroman • TOR 834
7. Gausman • BAL 816
8. Pérez • TEX 811
9. Estrada • TOR 806
10. Hammel • KCR 804

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. Osuna • TOR 58
2. Allen • CLE 55
Giles • HOU 55
4. Colomé • TBR 53
5. Díaz • SEA 52
6. Kimbrel • BOS 51
7. Herrera • KCR 48
8. Chapman • NYY 42
9. Kintzler • MIN 41
10. Claudio • TEX 38

Adjusted ERA+

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

1. Kluber • CLE 202
2. Sale • BOS 157
3. Severino • NYY 152
4. Stroman • TOR 145
5. Cashner • TEX 142
6. Carrasco • CLE 139
7. Pomeranz • BOS 137
8. Santana • MIN 135
9. Verlander • 2TM 131
10. Gray • 2TM 122

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 • BOS 2.45
2. Kluber • CLE 2.50
3. Severino • NYY 3.08
4. Carrasco • CLE 3.10
5. Archer • TBR 3.40
6. Fulmer • DET 3.67
7. Pomeranz • BOS 3.84
8. Verlander • 2TM 3.84
9. Bauer • CLE 3.88
10. Stroman • TOR 3.90

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. Kluber • CLE 50
2. Sale • BOS 39
3. Severino • NYY 30
4. Carrasco • CLE 30
5. Stroman • TOR 27
6. Verlander • 2TM 26
7. Santana • MIN 26
8. Kimbrel • BOS 24
9. Pomeranz • BOS 23
10. Cashner • TEX 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. Kluber • CLE 5.4
2. Sale • BOS 4.0
3. Severino • NYY 3.1
4. Carrasco • CLE 3.1
5. Verlander • 2TM 2.8
6. Stroman • TOR 2.7
7. Santana • MIN 2.6
8. Kimbrel • BOS 2.3
Pomeranz • BOS 2.3
10. Keuchel • HOU 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. Kluber • CLE 54.66
2. Sale • BOS 38.30
3. Carrasco • CLE 35.27
4. Severino • NYY 32.37
5. Verlander • 2TM 30.45
6. Green • NYY 28.31
7. Kimbrel • BOS 27.97
8. Santana • MIN 26.94
9. Pomeranz • BOS 26.72
10. Miller • CLE 26.51

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. Kluber • CLE 4.8
2. Kimbrel • BOS 4.5
3. Miller • CLE 3.8
4. Sale • BOS 3.7
5. Carrasco • CLE 3.5
6. Claudio • TEX 3.4
7. Tepera • TOR 3.4
8. Verlander • 2TM 3.1
9. Severino • NYY 3.1
10. Petit • LAA 3.0

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. Kluber • CLE 5.4
2. Sale • BOS 3.9
3. Carrasco • CLE 3.4
4. Severino • NYY 3.1
5. Kimbrel • BOS 2.8
6. Keuchel • HOU 2.7
7. Robertson • 2TM 2.6
8. Petit • LAA 2.5
9. Miller • CLE 2.4
10. Green • NYY 2.4

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. Sale • BOS 3.1
2. Kluber • CLE 2.9
3. Kimbrel • BOS 2.9
4. Miller • CLE 2.6
5. Severino • NYY 2.5
6. Keuchel • HOU 2.1
7. Pomeranz • BOS 2.0
8. Robertson • 2TM 1.7
9. Santana • MIN 1.7
10. Green • NYY 1.6

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. Kluber • CLE 5.8
2. Sale • BOS 3.9
3. Carrasco • CLE 3.6
4. Verlander • 2TM 3.3
5. Severino • NYY 3.3
6. Keuchel • HOU 2.9
7. Green • NYY 2.8
8. Kimbrel • BOS 2.7
Santana • MIN 2.7
10. Pomeranz • BOS 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