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. Bregman • HOU 9.0
2. Semien • OAK 8.4
3. Trout • LAA 7.9
4. Minor • TEX 7.8
5. Lynn • TEX 7.7
6. Verlander • HOU 7.3
7. Chapman • OAK 7.3
8. Betts • BOS 7.2
9. Cole • HOU 6.5
10. Springer • HOU 6.5

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. Minor • TEX 8.0
2. Lynn • TEX 7.7
3. Verlander • HOU 7.4
4. Cole • HOU 6.7
5. Rodríguez • BOS 5.5
6. Giolito • CHW 5.4
7. Morton • TBR 4.9
8. Bieber • CLE 4.8
9. Means • BAL 4.4
10. Clevinger • CLE 4.2

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. Cole • HOU 2.50
2. Verlander • HOU 2.58
3. Morton • TBR 3.05
4. Bieber • CLE 3.28
5. Giolito • CHW 3.41
6. Minor • TEX 3.59
7. Lynn • TEX 3.67
8. Berríos • MIN 3.68
9. Rodríguez • BOS 3.81
10. Anderson • OAK 3.89

Wins

Wins

1. Verlander • HOU 21
2. Cole • HOU 20
3. Rodríguez • BOS 19
4. Germán • NYY 18
5. Gonzales • SEA 16
Lynn • TEX 16
Morton • TBR 16
8. Bieber • CLE 15
Fiers • OAK 15
Odorizzi • MIN 15
Paxton • NYY 15

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. Germán • NYY .818
2. Cole • HOU .800
3. Fiers • OAK .789
4. Verlander • HOU .778
5. Clevinger • CLE .765
6. Rodríguez • BOS .760
7. Morton • TBR .727
8. Paxton • NYY .714
9. Miley • HOU .700
10. Pineda • MIN .688

Walks & Hits per IP

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

1. Verlander • HOU 0.803
2. Cole • HOU 0.895
3. Bieber • CLE 1.054
4. Giolito • CHW 1.064
5. Morton • TBR 1.084
6. Fiers • OAK 1.186
7. Lynn • TEX 1.219
8. Berríos • MIN 1.223
9. Boyd • DET 1.230
10. Minor • TEX 1.238

Hits per 9 IP

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

1. Verlander • HOU 5.529
2. Cole • HOU 6.019
3. Giolito • CHW 6.674
4. Morton • TBR 7.120
5. Bieber • CLE 7.810
6. Fiers • OAK 8.090
7. Minor • TEX 8.208
8. Keller • KCR 8.383
9. Lynn • TEX 8.424
10. Rodríguez • BOS 8.631

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. Bieber • CLE 1.680
2. Verlander • HOU 1.695
3. Tanaka • NYY 1.978
4. Cole • HOU 2.035
5. Nova • CHW 2.262
6. Berríos • MIN 2.291
7. Porcello • BOS 2.323
8. Boyd • DET 2.428
9. Gonzales • SEA 2.483
10. Anderson • OAK 2.506

Strikeouts per 9 IP

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

1. Cole • HOU 13.818
2. Verlander • HOU 12.108
3. Giolito • CHW 11.615
4. Boyd • DET 11.558
5. Morton • TBR 11.096
6. Bieber • CLE 10.876
7. Lynn • TEX 10.627
8. Rodríguez • BOS 9.428
9. Berríos • MIN 8.760
10. Minor • TEX 8.640

Games Played

Games Played or Pitched

1. Petit • OAK 80
2. Diekman • 2TM 76
3. Hendriks • OAK 75
4. Farmer • DET 73
Ottavino • NYY 73
Workman • BOS 73
7. Buttrey • LAA 72
Kahnle • NYY 72
9. Robles • LAA 71
Roe • TBR 71
Soria • OAK 71

Saves

Saves

1. Osuna • HOU 38
2. Chapman • NYY 37
3. Hand • CLE 34
4. Colomé • CHW 30
Kennedy • KCR 30
Rogers • MIN 30
7. Hendriks • OAK 25
8. Robles • LAA 23
Giles • TOR 23
10. Greene • DET 22

Innings Pitched

Innings Pitched

1. Verlander • HOU 223.0
2. Bieber • CLE 214.1
3. Cole • HOU 212.1
4. Lynn • TEX 208.1
Minor • TEX 208.1
6. Rodríguez • BOS 203.1
7. Gonzales • SEA 203.0
8. Berríos • MIN 200.1
9. Morton • TBR 194.2
10. Nova • CHW 187.0

Strikeouts

Strikeouts

1. Cole • HOU 326
2. Verlander • HOU 300
3. Bieber • CLE 259
4. Lynn • TEX 246
5. Morton • TBR 240
6. Boyd • DET 238
7. Giolito • CHW 228
8. Sale • BOS 218
9. Rodríguez • BOS 213
10. Minor • TEX 200

Games Started

Games Started

1. Gonzales • SEA 34
Nova • CHW 34
Rodríguez • BOS 34
Verlander • HOU 34
5. Bieber • CLE 33
Cole • HOU 33
Fiers • OAK 33
López • CHW 33
Lynn • TEX 33
Miley • HOU 33
Morton • TBR 33

Complete Games

Complete Game

1. Giolito • CHW 3
Bieber • CLE 3
3. Leake • SEA 2
Verlander • HOU 2
Nova • CHW 2
Minor • TEX 2
7. Berríos • MIN 1
Tanaka • NYY 1
Sparkman • KCR 1
Sampson • TEX 1
Sale • BOS 1
Plesac • CLE 1
Carrasco • CLE 1
Feierabend • TOR 1
López • CHW 1
Bauer • CLE 1
Kikuchi • SEA 1
Jurado • TEX 1
Fiers • OAK 1

Shutouts

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

1. Bieber • CLE 2
Giolito • CHW 2
3. Bauer • CLE 1
Carrasco • CLE 1
Fiers • OAK 1
Kikuchi • SEA 1
Leake • SEA 1
Minor • TEX 1
Plesac • CLE 1
Sale • BOS 1
Sparkman • KCR 1
Tanaka • NYY 1
Verlander • HOU 1

Home Runs

Home Runs Hit/Allowed

1. Boyd • DET 39
2. Kikuchi • SEA 36
Verlander • HOU 36
4. López • CHW 35
5. Happ • NYY 34
6. Bieber • CLE 31
Junis • KCR 31
Porcello • BOS 31
9. Fiers • OAK 30
Germán • NYY 30
Minor • TEX 30
Nova • CHW 30
Sparkman • KCR 30

Bases on Balls

Bases on Balls/Walks

1. Rodríguez • BOS 75
2. Keller • KCR 70
3. Minor • TEX 68
Sanchez • 2TM 68
5. Pérez • MIN 67
6. López • CHW 65
7. Bauer • CLE 63
8. Miley • HOU 61
Thornton • TOR 61
10. Lynn • TEX 59
Turnbull • DET 59

Hits

Hits/Hits Allowed

1. Nova • CHW 225
2. Gonzales • SEA 210
3. López • CHW 203
4. Porcello • BOS 198
5. Kikuchi • SEA 195
Lynn • TEX 195
Rodríguez • BOS 195
8. Berríos • MIN 194
9. Junis • KCR 192
10. Minor • TEX 190

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. Verlander • HOU 7.143
2. Cole • HOU 6.792
3. Bieber • CLE 6.475
4. Boyd • DET 4.760
5. Morton • TBR 4.211
6. Lynn • TEX 4.169
7. Giolito • CHW 4.000
8. Berríos • MIN 3.824
9. Tanaka • NYY 3.725
10. Porcello • BOS 3.178

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. Morton • TBR 0.693
2. Keller • KCR 0.817
3. Lynn • TEX 0.907
4. Gonzales • SEA 1.020
5. Anderson • OAK 1.023
6. Rodríguez • BOS 1.062
7. Bailey • 2TM 1.157
8. Berríos • MIN 1.168
9. Giolito • CHW 1.223
10. Cole • HOU 1.229

Losses

Losses

1. Turnbull • DET 17
2. López • CHW 15
3. Bundy • BAL 14
Junis • KCR 14
Keller • KCR 14
Sanchez • 2TM 14
7. Gonzales • SEA 13
Norris • DET 13
Zimmermann • DET 13
10. Boyd • DET 12
Nova • CHW 12
Porcello • BOS 12

Earned Runs

Earned Runs Allowed

1. López • CHW 110
2. Porcello • BOS 107
3. Junis • KCR 102
4. Kikuchi • SEA 98
Nova • CHW 98
6. Boyd • DET 94
Pérez • MIN 94
8. Sparkman • KCR 91
9. Gonzales • SEA 90
Tanaka • NYY 90

Wild Pitches

Wild Pitches

1. Lynn • TEX 18
2. Cahill • LAA 14
3. Barnes • BOS 13
Fiers • OAK 13
5. Castro • BAL 11
Snell • TBR 11
7. Bedrosian • LAA 9
Brewer • BOS 9
Canning • LAA 9
Keller • KCR 9
Turnbull • DET 9

Hit By Pitch

Times Hit by a Pitch.

1. Turnbull • DET 16
2. Bauer • CLE 14
3. Bassitt • OAK 13
Sale • BOS 13
5. Morton • TBR 12
6. Junis • KCR 11
Diekman • 2TM 11
Sanchez • 2TM 11
9. López • KCR 10
Suarez • LAA 10
Brooks • 2TM 10

Batters Faced

Batters Faced

1. Lynn • TEX 875
2. Gonzales • SEA 866
3. Minor • TEX 863
4. Bieber • CLE 859
Rodríguez • BOS 859
6. Verlander • HOU 847
7. Berríos • MIN 842
8. Cole • HOU 817
9. López • CHW 809
10. Nova • CHW 806

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 • HOU 56
2. Colomé • CHW 54
Hand • CLE 54
4. Chapman • NYY 53
5. Kennedy • KCR 51
Robles • LAA 51
7. Giles • TOR 44
8. Hendriks • OAK 41
9. Leclerc • TEX 40
10. Rogers • MIN 36

Adjusted ERA+

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

1. Cole • HOU 185
2. Verlander • HOU 179
3. Minor • TEX 144
4. Bieber • CLE 144
5. Morton • TBR 144
6. Lynn • TEX 141
7. Giolito • CHW 134
8. Rodríguez • BOS 128
9. Berríos • MIN 123
10. Miley • HOU 116

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. Cole • HOU 2.64
2. Morton • TBR 2.81
3. Lynn • TEX 3.13
4. Verlander • HOU 3.27
5. Bieber • CLE 3.32
6. Giolito • CHW 3.43
7. Berríos • MIN 3.85
8. Rodríguez • BOS 3.86
9. Bailey • 2TM 4.11
10. Gonzales • SEA 4.15

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. Verlander • HOU 52
2. Cole • HOU 49
3. Minor • TEX 34
4. Bieber • CLE 33
5. Lynn • TEX 32
6. Morton • TBR 31
7. Clevinger • CLE 29
8. Hendriks • OAK 26
9. Rodríguez • BOS 25
10. Giolito • CHW 25

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. Verlander • HOU 5.4
2. Cole • HOU 5.1
3. Minor • TEX 3.5
4. Bieber • CLE 3.3
5. Lynn • TEX 3.2
6. Morton • TBR 3.1
7. Clevinger • CLE 3.0
8. Hendriks • OAK 2.5
9. Giolito • CHW 2.5
10. Rodríguez • BOS 2.4

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. Verlander • HOU 58.81
2. Cole • HOU 55.32
3. Bieber • CLE 38.18
4. Minor • TEX 36.87
5. Morton • TBR 35.28
6. Clevinger • CLE 34.77
7. Lynn • TEX 32.14
8. Giolito • CHW 26.69
9. Workman • BOS 26.11
10. Bummer • CHW 25.97

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. Verlander • HOU 5.6
2. Cole • HOU 4.7
3. Bummer • CHW 3.8
4. Workman • BOS 3.6
5. Bieber • CLE 3.6
6. Morton • TBR 3.5
7. Rogers • MIN 3.4
8. Clevinger • CLE 3.1
9. Robles • LAA 3.1
10. Minor • TEX 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. Verlander • HOU 5.4
2. Cole • HOU 5.2
3. Morton • TBR 3.7
4. Minor • TEX 3.3
5. Bieber • CLE 3.0
6. Giolito • CHW 2.9
7. Clevinger • CLE 2.9
8. Yarbrough • TBR 2.5
9. Workman • BOS 2.4
10. Petit • OAK 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. Clevinger • CLE 3.4
2. Morton • TBR 2.9
3. Bieber • CLE 2.9
4. Verlander • HOU 2.8
5. Cole • HOU 1.9
6. Drake • TBR 1.9
7. Odorizzi • MIN 1.8
8. Minor • TEX 1.8
9. Pagán • TBR 1.8
10. Rogers • MIN 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. Verlander • HOU 6.1
2. Cole • HOU 5.8
3. Bieber • CLE 3.8
4. Morton • TBR 3.7
5. Clevinger • CLE 3.6
6. Minor • TEX 3.5
7. Lynn • TEX 3.0
8. Giolito • CHW 2.7
9. Hendriks • OAK 2.5
10. Bummer • CHW 2.5

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