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. Rodriguez • SEA 8.5
2. Clemens • TOR 8.1
3. Jeter • NYY 7.5
4. Rogers • OAK 7.5
5. Finley • ANA 7.1
Martínez • BOS 7.1
7. Belle • CHW 7.1
Garciaparra • BOS 7.1
9. Griffey • SEA 6.6
10. Rodríguez • TEX 6.4

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. Clemens • TOR 8.1
2. Rogers • OAK 7.5
3. Martínez • BOS 7.3
4. Finley • ANA 7.2
5. Moyer • SEA 5.6
6. Radke • MIN 5.2
7. Mussina • BAL 5.0
8. Wells • NYY 4.8
9. Colón • CLE 4.4
10. Erickson • BAL 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. Clemens • TOR 2.65
2. Martínez • BOS 2.89
3. Rogers • OAK 3.17
4. Finley • ANA 3.39
5. Wells • NYY 3.49
6. Mussina • BAL 3.49
7. Moyer • SEA 3.53
8. Cone • NYY 3.55
9. Arrojo • TBD 3.56
10. Colón • CLE 3.71

Wins

Wins

1. Clemens • TOR 20
Cone • NYY 20
Helling • TEX 20
4. Martínez • BOS 19
Sele • TEX 19
6. Wells • NYY 18
7. Wakefield • BOS 17
8. Erickson • BAL 16
Pettitte • NYY 16
Rogers • OAK 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. Wells • NYY .818
2. Clemens • TOR .769
3. Hernández • NYY .750
4. Helling • TEX .741
Cone • NYY .741
6. Martínez • BOS .731
7. Baldwin • CHW .684
8. Wakefield • BOS .680
9. Rogers • OAK .667
10. Saberhagen • BOS .652

Walks & Hits per IP

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

1. Wells • NYY 1.045
2. Martínez • BOS 1.091
3. Clemens • TOR 1.095
4. Mussina • BAL 1.115
5. Moyer • SEA 1.178
6. Cone • NYY 1.180
7. Rogers • OAK 1.182
8. Saberhagen • BOS 1.200
9. Moehler • DET 1.247
10. Fassero • SEA 1.286

Hits per 9 IP

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

1. Clemens • TOR 6.482
2. Martínez • BOS 7.241
3. Irabu • NYY 7.699
4. Cone • NYY 8.061
5. Rogers • OAK 8.108
6. Wells • NYY 8.188
7. Guzmán • 2TM 8.232
8. Mussina • BAL 8.244
9. Williams • TOR 8.413
10. Finley • ANA 8.463

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. Wells • NYY 1.218
2. Saberhagen • BOS 1.491
3. Moyer • SEA 1.613
4. Mussina • BAL 1.788
5. Radke • MIN 1.811
6. Sirotka • CHW 1.998
7. Burkett • TEX 2.123
8. Moehler • DET 2.277
9. Erickson • BAL 2.471
10. Rogers • OAK 2.527

Strikeouts per 9 IP

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

1. Clemens • TOR 10.393
2. Martínez • BOS 9.668
3. Cone • NYY 9.058
4. Finley • ANA 8.543
5. Saunders • TBD 8.049
6. Mussina • BAL 7.633
7. Guzmán • 2TM 7.166
8. Sele • TEX 7.067
9. Fassero • SEA 7.050
10. Carpenter • TOR 6.994

Games Played

Games Played or Pitched

1. Runyan • DET 88
2. Quantrill • TOR 82
3. Swindell • 2TM 81
4. Guardado • MIN 79
5. Plesac • TOR 78
6. Trombley • MIN 77
7. Groom • OAK 75
8. Gordon • BOS 73
Service • KCR 73
10. Mills • BAL 72

Saves

Saves

1. Gordon • BOS 46
2. Wetteland • TEX 42
Percival • ANA 42
4. Jackson • CLE 40
5. Aguilera • MIN 38
6. Rivera • NYY 36
Montgomery • KCR 36
8. Taylor • OAK 33
9. Jones • DET 28
Myers • TOR 28

Innings Pitched

Innings Pitched

1. Erickson • BAL 251.1
2. Rogers • OAK 238.2
3. Clemens • TOR 234.2
4. Moyer • SEA 234.1
5. Belcher • KCR 234.0
6. Martínez • BOS 233.2
7. Fassero • SEA 224.2
8. Finley • ANA 223.1
9. Thompson • DET 222.0
10. Moehler • DET 221.1

Strikeouts

Strikeouts

1. Clemens • TOR 271
2. Martínez • BOS 251
3. Johnson • SEA 213
4. Finley • ANA 212
5. Cone • NYY 209
6. Erickson • BAL 186
7. Fassero • SEA 176
8. Mussina • BAL 175
9. Saunders • TBD 172
10. Guzmán • 2TM 168

Games Started

Games Started

1. Erickson • BAL 36
2. Belcher • KCR 34
Finley • ANA 34
Moyer • SEA 34
Rogers • OAK 34
Thompson • DET 34
7. Candiotti • OAK 33
Clemens • TOR 33
Hawkins • MIN 33
Haynes • OAK 33
Helling • TEX 33
Martínez • BOS 33
Moehler • DET 33
Nagy • CLE 33
Sele • TEX 33
Sirotka • CHW 33
Wakefield • BOS 33
Guzmán • 2TM 33

Complete Games

Complete Game

1. Erickson • BAL 11
2. Wells • NYY 8
3. Rogers • OAK 7
Fassero • SEA 7
5. Johnson • SEA 6
Colón • CLE 6
7. Thompson • DET 5
Clemens • TOR 5
Pettitte • NYY 5
Sirotka • CHW 5
Radke • MIN 5

Shutouts

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

1. Wells • NYY 5
2. Clemens • TOR 3
Moyer • SEA 3
Moehler • DET 3
5. Arrojo • TBD 2
Mussina • BAL 2
Martínez • BOS 2
Johnson • SEA 2
Sele • TEX 2
Helling • TEX 2
Erickson • BAL 2
Colón • CLE 2

Home Runs

Home Runs Hit/Allowed

1. Belcher • KCR 37
2. Williams • TOR 36
3. Nagy • CLE 34
4. Fassero • SEA 33
5. Burba • CLE 30
Candiotti • OAK 30
Moehler • DET 30
Navarro • CHW 30
Sirotka • CHW 30
Wakefield • BOS 30

Bases on Balls

Bases on Balls/Walks

1. Saunders • TBD 111
2. Finley • ANA 109
3. Rapp • KCR 107
4. Guzmán • 2TM 98
5. Olivares • ANA 91
6. Clemens • TOR 88
Haynes • OAK 88
8. Pettitte • NYY 87
Wright • CLE 87
10. Sele • TEX 84

Hits

Hits/Hits Allowed

1. Erickson • BAL 284
2. Sirotka • CHW 255
3. Nagy • CLE 250
4. Belcher • KCR 247
5. Sele • TEX 239
6. Radke • MIN 238
7. Moyer • SEA 234
8. Burkett • TEX 230
9. Haynes • OAK 229
10. Hawkins • MIN 227
Thompson • DET 227

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. Wells • NYY 5.621
2. Mussina • BAL 4.268
3. Moyer • SEA 3.762
4. Martínez • BOS 3.746
5. Cone • NYY 3.542
6. Saberhagen • BOS 3.448
7. Radke • MIN 3.395
8. Clemens • TOR 3.080
9. Burkett • TEX 2.848
10. Sirotka • CHW 2.723

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. Clemens • TOR 0.422
2. Sele • TEX 0.592
3. Colón • CLE 0.662
4. Saunders • TBD 0.702
5. Rogers • OAK 0.716
6. Finley • ANA 0.806
7. Thompson • DET 0.811
8. Erickson • BAL 0.824
9. Pettitte • NYY 0.832
10. Cone • NYY 0.867

Losses

Losses

1. Candiotti • OAK 16
Navarro • CHW 16
Guzmán • 2TM 16
4. Rusch • KCR 15
Saunders • TBD 15
Sirotka • CHW 15
Thompson • DET 15
8. Álvarez • TBD 14
Belcher • KCR 14
Hawkins • MIN 14
Milton • MIN 14
Radke • MIN 14

Earned Runs

Earned Runs Allowed

1. Burkett • TEX 123
2. Nagy • CLE 122
Navarro • CHW 122
4. Oquist • OAK 121
5. Sirotka • CHW 119
6. Erickson • BAL 112
7. Belcher • KCR 111
Hawkins • MIN 111
Rapp • KCR 111
10. Cloude • SEA 110
Haynes • OAK 110
Wakefield • BOS 110

Wild Pitches

Wild Pitches

1. Navarro • CHW 18
2. Stein • OAK 15
3. Candiotti • OAK 14
Rapp • KCR 14
5. Fassero • SEA 12
6. Haynes • OAK 11
Guzmán • 2TM 11
8. Hawkins • MIN 10
Helling • TEX 10
Mussina • BAL 10
Service • KCR 10
Slocumb • SEA 10
Spoljaric • SEA 10

Hit By Pitch

Times Hit by a Pitch.

1. Arrojo • TBD 19
2. Cone • NYY 15
3. Wakefield • BOS 14
4. Erickson • BAL 13
Sele • TEX 13
6. Springer • TBD 12
7. Johnson • SEA 11
Wright • CLE 11
9. Baldwin • CHW 10
Fassero • SEA 10
Moyer • SEA 10
Oliver • TEX 10
Rapp • KCR 10
Swift • SEA 10

Batters Faced

Batters Faced

1. Erickson • BAL 1,102
2. Belcher • KCR 1,003
3. Finley • ANA 976
4. Moyer • SEA 974
5. Rogers • OAK 970
6. Clemens • TOR 961
7. Fassero • SEA 954
Sele • TEX 954
9. Martínez • BOS 951
10. Thompson • DET 946

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. Gordon • BOS 69
2. Aguilera • MIN 64
3. Percival • ANA 60
4. Wetteland • TEX 59
5. Hernández • TBD 58
Taylor • OAK 58
7. Jackson • CLE 57
8. Benítez • BAL 54
Montgomery • KCR 54
10. Jones • DET 53

Adjusted ERA+

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

1. Clemens • TOR 174
2. Martínez • BOS 163
3. Rogers • OAK 143
4. Finley • ANA 140
5. Arrojo • TBD 133
6. Mussina • BAL 130
7. Moyer • SEA 129
8. Colón • CLE 128
9. Wells • NYY 127
10. Cone • NYY 125

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. Clemens • TOR 2.65
2. Martínez • BOS 3.40
3. Cone • NYY 3.45
4. Mussina • BAL 3.48
5. Moyer • SEA 3.73
6. Colón • CLE 3.75
7. Sele • TEX 3.79
8. Wells • NYY 3.80
9. Erickson • BAL 3.83
10. Burkett • TEX 3.89

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. Clemens • TOR 50
2. Martínez • BOS 47
3. Rogers • OAK 35
4. Finley • ANA 31
5. Moyer • SEA 28
6. Arrojo • TBD 28
7. Wells • NYY 26
8. Mussina • BAL 25
9. Colón • CLE 23
10. Jackson • CLE 23

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. Clemens • TOR 5.2
2. Martínez • BOS 4.7
3. Rogers • OAK 3.5
4. Finley • ANA 3.0
5. Moyer • SEA 2.8
6. Arrojo • TBD 2.7
7. Wells • NYY 2.5
8. Mussina • BAL 2.5
9. Colón • CLE 2.3
10. Jackson • CLE 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. Clemens • TOR 52.09
2. Martínez • BOS 46.65
3. Rogers • OAK 38.26
4. Wells • NYY 34.11
5. Moyer • SEA 34.07
6. Mussina • BAL 30.98
7. Arrojo • TBD 30.17
8. Cone • NYY 29.18
9. Jackson • CLE 28.41
10. Colón • CLE 28.38

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. Gordon • BOS 5.8
2. Martínez • BOS 5.0
3. Rivera • NYY 4.6
4. Clemens • TOR 4.4
5. Rogers • OAK 3.5
6. Jackson • CLE 3.4
7. Wells • NYY 3.1
8. Howry • CHW 2.9
9. Arrojo • TBD 2.8
10. Brocail • DET 2.7

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. Clemens • TOR 5.2
2. Martínez • BOS 3.6
3. Rogers • OAK 3.6
4. Cone • NYY 3.4
5. Wells • NYY 3.2
6. Moyer • SEA 2.6
7. Mussina • BAL 2.5
8. Gordon • BOS 2.5
9. Colón • CLE 2.1
10. Hernández • 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. Martínez • BOS 3.7
2. Gordon • BOS 3.6
3. Wetteland • TEX 2.6
4. Harris • ANA 1.9
5. Percival • ANA 1.8
6. Helling • TEX 1.8
7. Crabtree • TEX 1.7
8. Colón • CLE 1.6
9. Hasegawa • ANA 1.5
10. Stottlemyre • TEX 1.3

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. Clemens • TOR 5.4
2. Martínez • BOS 4.7
3. Rogers • OAK 3.9
4. Wells • NYY 3.5
5. Moyer • SEA 3.4
6. Mussina • BAL 3.1
7. Cone • NYY 3.0
8. Arrojo • TBD 3.0
9. Colón • CLE 2.8
10. Finley • ANA 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