American League Pitching Leaders

Wins Above Replacement--all
1. Yastrzemski • BOS 12.5
2. Robinson • BAL 7.7
3. Kaline • DET 7.5
4. Blair • BAL 6.8
5. Merritt • MIN 6.5
6. Killebrew • MIN 6.5
7. Freehan • DET 6.1
8. Horlen • CHW 5.6
9. Boswell • MIN 5.4
Robinson • BAL 5.4
WAR for Pitchers
1. Merritt • MIN 6.5
2. Chance • MIN 5.9
3. Horlen • CHW 5.5
4. Hunter • KCA 4.6
5. Siebert • CLE 4.6
6. Boswell • MIN 4.6
7. Tiant • CLE 4.6
8. Hargan • CLE 4.5
9. Downing • NYY 4.5
10. Kaat • MIN 4.2
Earned Run Average
1. Horlen • CHW 2.06
2. Peters • CHW 2.28
3. Siebert • CLE 2.38
4. John • CHW 2.47
5. Merritt • MIN 2.53
6. Clark • CAL 2.59
7. Hargan • CLE 2.62
8. Downing • NYY 2.63
9. Chance • MIN 2.73
10. Tiant • CLE 2.74
Wins
1. Lonborg • BOS 22
Wilson • DET 22
3. Chance • MIN 20
4. Horlen • CHW 19
5. McLain • DET 17
6. Kaat • MIN 16
Peters • CHW 16
Sparma • DET 16
9. Stottlemyre • NYY 15
10. Boswell • MIN 14
Downing • NYY 14
Hargan • CLE 14
Lolich • DET 14
Phoebus • BAL 14
Win-Loss %
1. Santiago • BOS .750
2. Horlen • CHW .731
3. Lonborg • BOS .710
4. Wilson • DET .667
5. Merritt • MIN .650
6. Sparma • DET .640
7. Phoebus • BAL .609
8. McGlothlin • CAL .600
9. Peters • CHW .593
10. Wyatt • BOS .588
Chance • MIN .588
Walks & Hits per IP
1. Horlen • CHW 0.953
2. Merritt • MIN 0.993
3. Siebert • CLE 1.025
4. John • CHW 1.065
5. Peters • CHW 1.069
6. Lolich • DET 1.083
7. Downing • NYY 1.086
8. Chance • MIN 1.100
9. McGlothlin • CAL 1.110
10. Stange • BOS 1.117
Hits per 9 IP
1. Peters • CHW 6.473
2. Boswell • MIN 6.548
3. Horlen • CHW 6.558
4. Siebert • CLE 6.604
5. Downing • NYY 7.051
6. John • CHW 7.217
7. Hunter • KCA 7.244
8. Hargan • CLE 7.265
9. Lolich • DET 7.279
10. Brunet • CAL 7.308
Bases On Balls per 9 IP
1. Merritt • MIN 1.186
2. Kaat • MIN 1.435
3. Stange • BOS 1.585
4. Horlen • CHW 2.023
5. Peterson • NYY 2.134
6. Chance • MIN 2.157
7. Ortega • WSA 2.335
8. Pascual • WSA 2.350
9. John • CHW 2.372
10. Lolich • DET 2.471
Strikeouts per 9 IP
1. Tiant • CLE 9.225
2. McDowell • CLE 8.987
3. Boswell • MIN 8.246
4. Lonborg • BOS 8.100
5. Phoebus • BAL 7.745
6. Lolich • DET 7.676
7. Downing • NYY 7.631
8. Nash • KCA 7.529
9. Peters • CHW 7.442
10. Kaat • MIN 7.211
Games Played
1. Locker • CHW 77
2. Rojas • CAL 72
3. Kelso • CAL 69
4. Womack • NYY 65
5. McMahon • 2TM 63
6. Knowles • WSA 61
7. Wyatt • BOS 60
8. Worthington • MIN 59
9. Baldwin • WSA 58
10. Aker • KCA 57
Saves
1. Rojas • CAL 27
2. Locker • CHW 20
Wyatt • BOS 20
4. Womack • NYY 18
5. Worthington • MIN 16
6. Knowles • WSA 14
7. Aker • KCA 12
Gladding • DET 12
Drabowsky • BAL 12
Wilhelm • CHW 12
Baldwin • WSA 12
Innings Pitched
1. Chance • MIN 283.2
2. Lonborg • BOS 273.1
3. Wilson • DET 264.0
4. Kaat • MIN 263.1
5. Peters • CHW 260.0
6. Hunter • KCA 259.2
7. Horlen • CHW 258.0
8. Stottlemyre • NYY 255.0
9. Brunet • CAL 250.0
10. McDowell • CLE 236.1
Strikeouts
1. Lonborg • BOS 246
2. McDowell • CLE 236
3. Chance • MIN 220
4. Tiant • CLE 219
5. Peters • CHW 215
6. Kaat • MIN 211
7. Boswell • MIN 204
8. Hunter • KCA 196
9. Nash • KCA 186
10. Wilson • DET 184
Games Started
1. Chance • MIN 39
Lonborg • BOS 39
3. Kaat • MIN 38
Wilson • DET 38
5. Brunet • CAL 37
McDowell • CLE 37
McLain • DET 37
Sparma • DET 37
9. Peters • CHW 36
Stottlemyre • NYY 36
Complete Games
1. Chance • MIN 18
2. Lonborg • BOS 15
Hargan • CLE 15
4. Kaat • MIN 13
Hunter • KCA 13
Horlen • CHW 13
7. Wilson • DET 12
8. Lolich • DET 11
Boswell • MIN 11
Sparma • DET 11
Peters • CHW 11
Merritt • MIN 11
Shutouts
1. McGlothlin • CAL 6
Lolich • DET 6
John • CHW 6
Horlen • CHW 6
Hargan • CLE 6
6. Hunter • KCA 5
Chance • MIN 5
Sparma • DET 5
9. Bertaina • 2TM 4
Merritt • MIN 4
Downing • NYY 4
Phoebus • BAL 4
Stottlemyre • NYY 4
Home Runs
1. McLain • DET 35
2. Wilson • DET 34
3. Tiant • CLE 24
4. Lonborg • BOS 23
Bell • 2TM 23
6. Brandon • BOS 21
Kaat • MIN 21
McDowell • CLE 21
Merritt • MIN 21
Nash • KCA 21
Bases on Balls
1. McDowell • CLE 123
2. Barber • 2TM 115
3. Phoebus • BAL 114
4. Boswell • MIN 107
5. Wilson • DET 92
6. Peters • CHW 91
7. Brunet • CAL 90
8. Stottlemyre • NYY 88
9. Nash • KCA 87
10. Sparma • DET 85
Hits
1. Kaat • MIN 269
2. Chance • MIN 244
3. Stottlemyre • NYY 235
4. Lonborg • BOS 228
5. Wilson • DET 216
6. Hunter • KCA 209
McLain • DET 209
8. Brunet • CAL 203
9. McDowell • CLE 201
10. Nash • KCA 200
Strikeouts / Base On Balls
1. Merritt • MIN 5.367
2. Kaat • MIN 5.024
3. Tiant • CLE 3.269
4. Chance • MIN 3.235
5. Stange • BOS 3.156
6. Lolich • DET 3.107
7. Lonborg • BOS 2.964
8. Downing • NYY 2.803
9. Siebert • CLE 2.519
10. Pascual • WSA 2.465
Home Runs per 9 IP
1. Hargan • CLE 0.363
2. Horlen • CHW 0.453
3. Barber • 2TM 0.470
4. Peters • CHW 0.519
5. Chance • MIN 0.539
6. Peterson • NYY 0.546
7. Hunter • KCA 0.555
8. Boswell • MIN 0.566
9. Downing • NYY 0.580
10. McGlothlin • CAL 0.593
Losses
1. Brunet • CAL 19
2. Barber • 2TM 18
3. Hunter • KCA 17
Krausse • KCA 17
Nash • KCA 17
6. McLain • DET 16
Richert • 2TM 16
8. McDowell • CLE 15
Stottlemyre • NYY 15
10. Chance • MIN 14
Peterson • NYY 14
Earned Runs
1. McDowell • CLE 101
2. McLain • DET 99
3. Lonborg • BOS 96
Wilson • DET 96
5. Nash • KCA 93
6. Brunet • CAL 92
7. Sparma • DET 91
8. Kaat • MIN 89
9. Chance • MIN 86
10. Stottlemyre • NYY 84
Wild Pitches
1. McDowell • CLE 18
2. Barber • 2TM 14
3. McGlothlin • CAL 13
4. Clark • CAL 12
Lonborg • BOS 12
Phoebus • BAL 12
7. Hamilton • CAL 11
8. Dobson • KCA 10
Merritt • MIN 10
10. Brandon • BOS 9
Chance • MIN 9
Hargan • CLE 9
Kaat • MIN 9
Hit By Pitch
1. Lonborg • BOS 19
2. Peters • CHW 11
3. Locker • CHW 10
4. Coleman • WSA 9
Kaat • MIN 9
6. Sparma • DET 8
Barber • 2TM 8
8. Boswell • MIN 7
Brandon • BOS 7
Chance • MIN 7
Lolich • DET 7
McDowell • CLE 7
Merritt • MIN 7
Batters Faced
1. Chance • MIN 1,161
2. Lonborg • BOS 1,130
3. Kaat • MIN 1,100
4. Wilson • DET 1,083
5. Stottlemyre • NYY 1,063
6. Peters • CHW 1,060
7. Hunter • KCA 1,053
8. Brunet • CAL 1,027
9. McDowell • CLE 1,014
10. Horlen • CHW 995
Games Finished
1. Rojas • CAL 53
2. Womack • NYY 48
3. Locker • CHW 47
4. Worthington • MIN 44
5. Wyatt • BOS 43
6. Aker • KCA 40
7. Knowles • WSA 35
8. Kelso • CAL 32
9. Miller • BAL 31
10. Wilhelm • CHW 30
Adjusted ERA+
1. Horlen • CHW 146
2. Siebert • CLE 139
3. Merritt • MIN 138
4. Peters • CHW 132
5. Chance • MIN 128
6. Stange • BOS 127
7. Hargan • CLE 126
8. John • CHW 122
9. Tiant • CLE 121
10. Clark • CAL 120
Fielding Independent Pitching
1. Kaat • MIN 2.55
2. Chance • MIN 2.56
3. Lolich • DET 2.65
4. Downing • NYY 2.68
5. Hargan • CLE 2.81
6. Merritt • MIN 2.81
7. Peters • CHW 2.81
8. Hunter • KCA 2.82
9. Tiant • CLE 2.90
10. McGlothlin • CAL 2.92
Adj. Pitching Runs
1. Horlen • CHW 30
2. Merritt • MIN 23
3. Peters • CHW 20
4. Chance • MIN 18
5. Siebert • CLE 17
6. Drabowsky • BAL 16
7. Wilhelm • CHW 15
8. Hargan • CLE 14
9. McMahon • 2TM 14
10. Stange • BOS 14
Adj. Pitching Wins
1. Horlen • CHW 3.5
2. Merritt • MIN 2.7
3. Peters • CHW 2.3
4. Chance • MIN 2.1
5. Siebert • CLE 2.0
6. Drabowsky • BAL 1.9
7. Wilhelm • CHW 1.7
8. Hargan • CLE 1.7
9. McMahon • 2TM 1.6
Stange • BOS 1.6
Base-Out Runs Saved (RE24)
1. Horlen • CHW 38.66
2. Peters • CHW 23.35
3. McMahon • 2TM 20.72
4. Chance • MIN 18.09
5. Downing • NYY 17.87
6. Merritt • MIN 17.82
7. Lolich • DET 17.55
8. Lonborg • BOS 16.55
9. Hardin • BAL 16.46
10. Siebert • CLE 15.62
Win Probability Added (WPA)
1. Horlen • CHW 4.6
2. Wilhelm • CHW 3.8
3. Downing • NYY 2.9
4. Chance • MIN 2.7
5. Hargan • CLE 2.7
6. Knowles • WSA 2.6
7. McMahon • 2TM 2.6
8. Wyatt • BOS 2.5
9. Peters • CHW 2.3
10. Locker • CHW 2.2
Sit. Wins Saved (WPA/LI)
1. Horlen • CHW 4.7
2. Peters • CHW 2.7
3. Merritt • MIN 2.5
4. Watt • BAL 2.3
5. Chance • MIN 2.2
6. Lolich • DET 2.2
7. Downing • NYY 2.1
8. Siebert • CLE 2.1
9. Hargan • CLE 2.0
10. Hunter • KCA 2.0
Championship WPA (cWPA)
1. Horlen • CHW 13.4
2. Wilhelm • CHW 12.1
3. McMahon • 2TM 11.1
4. Lonborg • BOS 9.1
5. Lolich • DET 9.0
6. Kaat • MIN 8.9
7. Peters • CHW 8.0
8. John • CHW 5.1
9. Locker • CHW 4.6
10. Carlos • CHW 4.4
Base-Out Wins Saved (REW)
1. Horlen • CHW 4.8
2. Peters • CHW 2.8
3. McMahon • 2TM 2.5
4. Downing • NYY 2.1
5. Lolich • DET 2.0
6. Chance • MIN 2.0
7. Hardin • BAL 2.0
8. Merritt • MIN 2.0
9. Lonborg • BOS 1.8
10. Siebert • CLE 1.8

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