American League Pitching Leaders

Wins Above Replacement--all
1. Rodriguez • TEX 8.4
2. Halladay • TOR 8.0
3. Martinez • BOS 8.0
4. Hudson • OAK 7.5
5. Loaiza • CHW 7.2
6. Mussina • NYY 6.5
7. Blalock • TEX 6.4
8. Garciaparra • BOS 6.1
9. Boone • SEA 5.9
10. Posada • NYY 5.9
WAR for Pitchers
1. Halladay • TOR 8.1
2. Martinez • BOS 8.0
3. Hudson • OAK 7.4
4. Loaiza • CHW 7.2
5. Mussina • NYY 6.6
6. May • KCR 5.9
7. Mulder • OAK 5.8
8. Zito • OAK 5.3
9. Colón • CHW 5.1
10. Moyer • SEA 4.7
Earned Run Average
1. Martinez • BOS 2.22
2. Hudson • OAK 2.70
3. Loaiza • CHW 2.90
4. Mulder • OAK 3.13
5. Halladay • TOR 3.25
6. Moyer • SEA 3.27
7. Zito • OAK 3.30
8. Mussina • NYY 3.40
9. Franklin • SEA 3.57
10. Sabathia • CLE 3.60
Wins
1. Halladay • TOR 22
2. Loaiza • CHW 21
Moyer • SEA 21
Pettitte • NYY 21
5. Clemens • NYY 17
Lowe • BOS 17
Mussina • NYY 17
8. Hudson • OAK 16
Ortiz • ANA 16
Piñeiro • SEA 16
Win-Loss %
1. Martinez • BOS .778
2. Halladay • TOR .759
3. Moyer • SEA .750
4. Pettitte • NYY .724
5. Lowe • BOS .708
6. Ponson • BAL .700
Loaiza • CHW .700
8. Hudson • OAK .696
9. Wells • NYY .682
10. Mussina • NYY .680
Walks & Hits per IP
1. Martinez • BOS 1.039
2. Halladay • TOR 1.071
3. Hudson • OAK 1.075
4. Mussina • NYY 1.081
5. Loaiza • CHW 1.113
6. Mulder • OAK 1.179
7. Zito • OAK 1.183
8. May • KCR 1.190
9. Colón • CHW 1.198
10. Clemens • NYY 1.214
Hits per 9 IP
1. Martinez • BOS 7.088
2. Zito • OAK 7.226
3. Hudson • OAK 7.388
4. Loaiza • CHW 7.794
5. Zambrano • TBD 7.885
6. Mussina • NYY 8.050
7. Piñeiro • SEA 8.164
8. Colón • CHW 8.293
9. Moyer • SEA 8.330
10. May • KCR 8.443
Bases On Balls per 9 IP
1. Wells • NYY 0.845
2. Halladay • TOR 1.083
3. Radke • MIN 1.187
4. Mussina • NYY 1.677
5. Mulder • OAK 1.929
6. Anderson • 2TM 1.958
7. Lohse • MIN 2.015
8. Thomson • TEX 2.032
9. Pettitte • NYY 2.160
10. Loaiza • CHW 2.227
Strikeouts per 9 IP
1. Martinez • BOS 9.932
2. Loaiza • CHW 8.231
3. Mussina • NYY 8.175
4. Clemens • NYY 8.079
5. Escobar • TOR 7.935
6. Pettitte • NYY 7.776
7. Wakefield • BOS 7.517
8. Lilly • OAK 7.419
9. Halladay • TOR 6.902
10. Lackey • ANA 6.662
Games Played
1. Miller • TOR 79
2. Walker • DET 78
3. Grimsley • KCR 76
Ryan • BAL 76
5. Hawkins • MIN 74
6. Báez • CLE 73
Cordero • TEX 73
Romero • MIN 73
9. Bradford • OAK 72
Foulke • OAK 72
López • TOR 72
Timlin • BOS 72
Saves
1. Foulke • OAK 43
2. Guardado • MIN 41
3. Rivera • NYY 40
4. Julio • BAL 36
5. Percival • ANA 33
6. MacDougal • KCR 27
7. Urbina • TEX 26
Carter • TBD 26
9. Báez • CLE 25
10. Kim • BOS 16
Hasegawa • SEA 16
Innings Pitched
1. Halladay • TOR 266.0
2. Colón • CHW 242.0
3. Hudson • OAK 240.0
4. Zito • OAK 231.2
5. Buehrle • CHW 230.1
6. Loaiza • CHW 226.1
7. Thomson • TEX 217.0
8. Moyer • SEA 215.0
9. Mussina • NYY 214.2
10. Wells • NYY 213.0
Strikeouts
1. Loaiza • CHW 207
2. Martinez • BOS 206
3. Halladay • TOR 204
4. Mussina • NYY 195
5. Clemens • NYY 190
6. Pettitte • NYY 180
7. Colón • CHW 173
8. Santana • MIN 169
Wakefield • BOS 169
10. Hudson • OAK 162
Games Started
1. Halladay • TOR 36
2. Buehrle • CHW 35
Thomson • TEX 35
Zito • OAK 35
5. Colón • CHW 34
Hudson • OAK 34
Loaiza • CHW 34
8. Clemens • NYY 33
García • SEA 33
Lackey • ANA 33
Lohse • MIN 33
Lowe • BOS 33
Maroth • DET 33
Moyer • SEA 33
Pettitte • NYY 33
Radke • MIN 33
Wakefield • BOS 33
Complete Games
1. Mulder • OAK 9
Halladay • TOR 9
Colón • CHW 9
4. Zito • OAK 4
Ponson • BAL 4
Wells • NYY 4
7. Thomson • TEX 3
Radke • MIN 3
Piñeiro • SEA 3
Hudson • OAK 3
Martinez • BOS 3
López • BAL 3
Shutouts
1. Hudson • OAK 2
Lackey • ANA 2
Mulder • OAK 2
Piñeiro • SEA 2
Halladay • TOR 2
6. Dickey • TEX 1
Escobar • TOR 1
Franklin • SEA 1
Hendrickson • TOR 1
Kennedy • TBD 1
Lohse • MIN 1
López • BAL 1
May • KCR 1
Clemens • NYY 1
Radke • MIN 1
Reed • MIN 1
Sabathia • CLE 1
Sosa • TBD 1
Thomson • TEX 1
Traber • CLE 1
Waechter • TBD 1
Wells • NYY 1
Wright • KCR 1
Zito • OAK 1
Anderson • 2TM 1
Mussina • NYY 1
Home Runs
1. Franklin • SEA 34
Maroth • DET 34
Washburn • ANA 34
4. Radke • MIN 32
5. García • SEA 31
Lackey • ANA 31
May • KCR 31
8. Colón • CHW 30
Helling • BAL 30
Meche • SEA 30
Bases on Balls
1. Zambrano • TBD 106
2. Zito • OAK 88
3. Johnson • BAL 80
4. Escobar • TOR 78
5. Piñeiro • SEA 76
6. Garland • CHW 74
7. Lowe • BOS 72
8. García • SEA 71
Wakefield • BOS 71
10. Lewis • TEX 70
Hits
1. Halladay • TOR 253
2. Buehrle • CHW 250
3. Radke • MIN 242
Wells • NYY 242
5. Cornejo • DET 236
6. Thomson • TEX 234
7. Maroth • DET 231
8. Pettitte • NYY 227
Rogers • MIN 227
10. Colón • CHW 223
Lackey • ANA 223
Strikeouts / Base On Balls
1. Halladay • TOR 6.375
2. Wells • NYY 5.050
3. Mussina • NYY 4.875
4. Martinez • BOS 4.383
5. Radke • MIN 4.286
6. Loaiza • CHW 3.696
7. Pettitte • NYY 3.600
8. Clemens • NYY 3.276
9. Mulder • OAK 3.200
10. Lohse • MIN 2.889
Home Runs per 9 IP
1. Martinez • BOS 0.338
2. Hudson • OAK 0.563
3. Loaiza • CHW 0.676
4. Mulder • OAK 0.723
5. Zito • OAK 0.738
6. Escobar • TOR 0.749
7. Lowe • BOS 0.752
8. Moyer • SEA 0.795
9. Piñeiro • SEA 0.808
10. Cornejo • DET 0.832
Losses
1. Maroth • DET 21
2. Bonderman • DET 19
3. Cornejo • DET 17
4. Lackey • ANA 16
5. Lidle • TOR 15
Washburn • ANA 15
7. Buehrle • CHW 14
García • SEA 14
Thomson • TEX 14
10. Colón • CHW 13
Franklin • SEA 13
Garland • CHW 13
Meche • SEA 13
Ortiz • ANA 13
Earned Runs
1. Lidle • TOR 123
Maroth • DET 123
3. Thomson • TEX 117
4. Buehrle • CHW 106
Radke • MIN 106
Weaver • NYY 106
7. Lackey • ANA 105
8. Burkett • BOS 104
Colón • CHW 104
Ortiz • ANA 104
Wild Pitches
1. Zambrano • TBD 15
2. Bonderman • DET 12
3. García • SEA 11
Lackey • ANA 11
5. Lohse • MIN 10
6. Davis • CLE 9
Escobar • TOR 9
Lidle • TOR 9
Romero • MIN 9
10. Colón • CHW 8
Garland • CHW 8
Germán • DET 8
Sosa • TBD 8
Wakefield • BOS 8
Hit By Pitch
1. Zambrano • TBD 20
2. González • TBD 12
Helling • BAL 12
Ortiz • ANA 12
Sele • ANA 12
Wakefield • BOS 12
Westbrook • CLE 12
8. García • SEA 11
Kennedy • TBD 11
Lowe • BOS 11
Rogers • MIN 11
Washburn • ANA 11
Weaver • NYY 11
Batters Faced
1. Halladay • TOR 1,071
2. Colón • CHW 984
3. Buehrle • CHW 978
4. Hudson • OAK 967
5. Zito • OAK 957
6. Loaiza • CHW 922
7. Thomson • TEX 910
8. Moyer • SEA 897
9. Pettitte • NYY 896
10. Piñeiro • SEA 890
Games Finished
1. Foulke • OAK 67
2. MacDougal • KCR 61
3. Guardado • MIN 60
4. Rivera • NYY 57
5. Carter • TBD 55
6. Julio • BAL 51
7. Percival • ANA 49
8. Báez • CLE 46
9. Koch • CHW 45
10. Urbina • TEX 37
Adjusted ERA+
1. Martinez • BOS 211
2. Hudson • OAK 165
3. Loaiza • CHW 159
4. Halladay • TOR 145
5. Mulder • OAK 142
6. Zito • OAK 135
7. Moyer • SEA 132
8. May • KCR 130
9. Mussina • NYY 130
10. Sabathia • CLE 122
Fielding Independent Pitching
1. Martinez • BOS 2.21
2. Loaiza • CHW 3.05
3. Mussina • NYY 3.09
4. Halladay • TOR 3.23
5. Pettitte • NYY 3.35
6. Mulder • OAK 3.38
7. Hudson • OAK 3.38
8. Clemens • NYY 3.60
9. Escobar • TOR 3.80
10. Piñeiro • SEA 3.93
Adj. Pitching Runs
1. Martinez • BOS 49
2. Hudson • OAK 45
3. Loaiza • CHW 44
4. Halladay • TOR 39
5. Mulder • OAK 30
6. Zito • OAK 27
7. Moyer • SEA 27
8. Santana • MIN 27
9. Marte • CHW 26
10. Mussina • NYY 26
Adj. Pitching Wins
1. Martinez • BOS 5.1
2. Hudson • OAK 4.6
3. Loaiza • CHW 4.6
4. Halladay • TOR 3.9
5. Mulder • OAK 3.1
6. Zito • OAK 2.7
7. Moyer • SEA 2.7
8. Santana • MIN 2.7
9. Mussina • NYY 2.6
10. Marte • CHW 2.6
Base-Out Runs Saved (RE24)
1. Martinez • BOS 52.61
2. Loaiza • CHW 47.71
3. Hudson • OAK 44.00
4. Halladay • TOR 36.52
5. Mulder • OAK 33.72
6. Santana • MIN 33.22
7. Mussina • NYY 29.40
8. Moyer • SEA 29.38
9. Donnelly • ANA 28.98
10. Foulke • OAK 27.66
Win Probability Added (WPA)
1. Loaiza • CHW 5.3
2. Martinez • BOS 5.1
3. Foulke • OAK 4.6
4. Donnelly • ANA 4.5
5. Halladay • TOR 4.4
6. Hudson • OAK 4.4
7. Hawkins • MIN 4.1
8. Rivera • NYY 3.7
9. Santana • MIN 3.7
10. Mussina • NYY 3.5
Sit. Wins Saved (WPA/LI)
1. Hudson • OAK 4.8
2. Martinez • BOS 4.8
3. Loaiza • CHW 4.7
4. Zito • OAK 3.8
5. Halladay • TOR 3.8
6. Mussina • NYY 3.5
7. Mulder • OAK 3.2
8. Santana • MIN 2.7
9. Moyer • SEA 2.6
10. Marte • CHW 2.3
Championship WPA (cWPA)
1. Martinez • BOS 5.5
2. Foulke • OAK 5.1
3. Hawkins • MIN 4.7
4. Hudson • OAK 4.2
5. Moyer • SEA 3.0
6. Mulder • OAK 2.7
7. Marte • CHW 2.6
8. Santana • MIN 2.5
9. Mussina • NYY 2.4
10. Rivera • NYY 2.4
Base-Out Wins Saved (REW)
1. Martinez • BOS 5.5
2. Loaiza • CHW 4.9
3. Hudson • OAK 4.6
4. Halladay • TOR 3.6
5. Mulder • OAK 3.5
6. Santana • MIN 3.3
7. Moyer • SEA 3.0
8. Mussina • NYY 3.0
9. Donnelly • ANA 2.9
10. Zito • OAK 2.8

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 batting rate stats, generally a minimum of 3.1 Plate Appearances/G, 1.0 IP/G, 0.67 Gm and Chances/Team Game (fielding), 0.2 SB att/Team Game (catchers), and 0.1 SB att/Team Game (baserunners only since 1951), and 0.1 decision/G for single-season leaderboards generally needed for rate statistics. For pitcher fielding the minimums are reduced by a third. For LF, CF, RF fielding stats, we only have reliable data since 1901, so all leaders are since 1901. Explanation of min. requirements