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. Feller • CLE 9.7
2. DiMaggio • NYY 8.2
3. Newsom • 2TM 7.7
4. Grove • BOS 6.8
5. Foxx • BOS 6.8
6. Rolfe • NYY 6.7
7. Williams • BOS 6.6
8. Johnson • PHA 6.5
9. Gordon • NYY 6.2
10. Selkirk • NYY 5.8

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. Feller • CLE 9.2
2. Newsom • 2TM 8.2
3. Grove • BOS 7.1
4. Leonard • WSH 4.8
Bridges • DET 4.8
6. Harder • CLE 4.6
7. Rigney • CHW 4.5
8. Lyons • CHW 4.4
9. Ruffing • NYY 4.4
10. Smith • 2TM 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. Grove • BOS 2.54
2. Lyons • CHW 2.76
3. Feller • CLE 2.85
4. Ruffing • NYY 2.93
5. Hadley • NYY 2.98
6. Gomez • NYY 3.41
7. Bridges • DET 3.50
8. Harder • CLE 3.50
9. Leonard • WSH 3.54
10. Newsom • 2TM 3.58

Wins

Wins

1. Feller • CLE 24
2. Ruffing • NYY 21
3. Leonard • WSH 20
Newsom • 2TM 20
5. Bridges • DET 17
6. Lee • CHW 15
Rigney • CHW 15
Harder • CLE 15
Grove • BOS 15
10. Milnar • CLE 14
Lyons • CHW 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. Donald • NYY .813
2. Grove • BOS .789
3. Ruffing • NYY .750
4. Feller • CLE .727
5. Leonard • WSH .714
6. Bridges • DET .708
7. Pearson • NYY .706
8. Lyons • CHW .700
9. Hadley • NYY .667
10. Rigney • CHW .652

Walks & Hits per IP

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

1. Lyons • CHW 1.089
2. Ruffing • NYY 1.226
3. Leonard • WSH 1.233
4. Feller • CLE 1.244
5. Grove • BOS 1.246
6. Bridges • DET 1.247
7. Gomez • NYY 1.298
8. Harder • CLE 1.332
9. Rigney • CHW 1.335
10. Newsom • 2TM 1.365

Hits per 9 IP

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

1. Feller • CLE 6.887
2. Hadley • NYY 7.714
3. Gomez • NYY 7.864
4. Ruffing • NYY 8.139
5. Chase • WSH 8.341
6. Smith • 2TM 8.384
7. Newsom • 2TM 8.393
8. Lyons • CHW 8.444
9. Bridges • DET 8.455
10. Grove • BOS 8.482

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. Lyons • CHW 1.355
2. Leonard • WSH 1.972
3. Beckmann • PHA 2.376
4. Lee • CHW 2.681
5. Grove • BOS 2.733
6. Harder • CLE 2.769
7. Bridges • DET 2.773
8. Allen • CLE 2.880
9. Ruffing • NYY 2.893
10. Nelson • PHA 2.914

Strikeouts per 9 IP

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

1. Feller • CLE 7.463
2. Newsom • 2TM 5.925
3. Bridges • DET 5.864
4. Rigney • CHW 4.898
5. Gomez • NYY 4.636
6. Chase • WSH 4.578
7. Krakauskas • WSH 4.555
8. Allen • CLE 4.063
9. Wilson • BOS 4.060
10. Trout • DET 4.000

Games Played

Games Played or Pitched

1. Brown • CHW 61
2. Dean • PHA 54
3. Dickman • BOS 48
4. Heving • BOS 46
5. Potter • PHA 41
Trotter • SLB 41
Newsom • 2TM 41
8. Appleton • WSH 40
Carrasquel • WSH 40
Kramer • SLB 40

Saves

Saves

1. Murphy • NYY 19
2. Brown • CHW 18
3. Heving • BOS 8
4. Dean • PHA 7
Appleton • WSH 7
6. Dickman • BOS 6
7. Benton • DET 5
8. McKain • DET 4
Ostermueller • BOS 4
10. Russo • NYY 3
Hudlin • CLE 3
Lee • CHW 3
Milnar • CLE 3
Mills • SLB 3

Innings Pitched

Innings Pitched

1. Feller • CLE 296.2
2. Newsom • 2TM 291.2
3. Leonard • WSH 269.1
4. Lee • CHW 235.0
5. Ruffing • NYY 233.1
6. Chase • WSH 232.0
7. Rigney • CHW 218.2
8. Krakauskas • WSH 217.1
9. Kennedy • 2TM 212.2
10. Kramer • SLB 211.2

Strikeouts

Strikeouts

1. Feller • CLE 246
2. Newsom • 2TM 192
3. Bridges • DET 129
4. Rigney • CHW 119
5. Chase • WSH 118
6. Krakauskas • WSH 110
7. Mills • SLB 103
8. Gomez • NYY 102
9. Ruffing • NYY 95
10. Leonard • WSH 88

Games Started

Games Started

1. Newsom • 2TM 37
2. Feller • CLE 35
3. Leonard • WSH 34
4. Kramer • SLB 31
Chase • WSH 31
Kennedy • 2TM 31
7. Rigney • CHW 29
Lee • CHW 29
Krakauskas • WSH 29
10. Ross • PHA 28
Ruffing • NYY 28

Complete Games

Complete Game

1. Feller • CLE 24
Newsom • 2TM 24
3. Ruffing • NYY 22
4. Leonard • WSH 21
5. Grove • BOS 17
6. Lyons • CHW 16
Bridges • DET 16
8. Lee • CHW 15
Chase • WSH 15
10. Gomez • NYY 14

Shutouts

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

1. Ruffing • NYY 5
2. Feller • CLE 4
3. Newsom • 2TM 3
4. Allen • CLE 2
Rigney • CHW 2
Nelson • PHA 2
Milnar • CLE 2
Leonard • WSH 2
Lee • CHW 2
Kramer • SLB 2
Russo • NYY 2
Grove • BOS 2
Gomez • NYY 2
Donald • NYY 2
Bridges • DET 2
Beckmann • PHA 2

Home Runs

Home Runs Hit/Allowed

1. Nelson • PHA 27
2. Marcum • 2TM 26
Potter • PHA 26
4. Kennedy • 2TM 22
5. Newsom • 2TM 19
6. Kramer • SLB 18
7. Rowe • DET 17
Ross • PHA 17
9. Trotter • SLB 16
Caster • PHA 16
Mills • SLB 16
Leonard • WSH 16

Bases on Balls

Bases on Balls/Walks

1. Feller • CLE 142
2. Kramer • SLB 127
3. Newsom • 2TM 126
4. Kennedy • 2TM 124
5. Chase • WSH 114
Krakauskas • WSH 114
7. Mills • SLB 113
8. Milnar • CLE 99
9. Ross • PHA 95
10. Smith • 2TM 92

Hits

Hits/Hits Allowed

1. Leonard • WSH 273
2. Newsom • 2TM 272
3. Kramer • SLB 269
4. Lee • CHW 260
5. Potter • PHA 258
6. Kennedy • 2TM 254
7. Nelson • PHA 233
8. Krakauskas • WSH 230
9. Feller • CLE 227
10. Ross • PHA 216

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. Lyons • CHW 2.500
2. Bridges • DET 2.115
3. Feller • CLE 1.732
4. Newsom • 2TM 1.524
5. Leonard • WSH 1.492
6. Rigney • CHW 1.417
7. Allen • CLE 1.411
8. Grove • BOS 1.397
9. Ruffing • NYY 1.267
10. Gomez • NYY 1.214

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. Trout • DET 0.278
2. Ostermueller • BOS 0.339
3. Lyons • CHW 0.365
4. Grove • BOS 0.377
5. Chase • WSH 0.388
6. Feller • CLE 0.394
7. Carrasquel • WSH 0.395
8. Rigney • CHW 0.412
9. Allen • CLE 0.463
10. Milnar • CLE 0.474

Losses

Losses

1. Kennedy • 2TM 20
2. Chase • WSH 19
3. Krakauskas • WSH 17
4. Kramer • SLB 16
5. Ross • PHA 14
6. Nelson • PHA 13
Harris • 2TM 13
Gill • 2TM 13
Trotter • SLB 13
10. Haynes • WSH 12
Milnar • CLE 12
Potter • PHA 12
Rowe • DET 12
Pippen • 2TM 12

Earned Runs

Earned Runs Allowed

1. Potter • PHA 144
2. Kramer • SLB 137
Kennedy • 2TM 137
4. Ross • PHA 116
Newsom • 2TM 116
6. Krakauskas • WSH 111
7. Lee • CHW 110
8. Leonard • WSH 106
9. Mills • SLB 105
Nelson • PHA 105

Wild Pitches

Wild Pitches

1. Feller • CLE 14
2. Potter • PHA 12
3. Chase • WSH 11
4. Harris • 2TM 10
5. Kramer • SLB 9
6. Leonard • WSH 6
Haynes • WSH 6
8. Allen • CLE 5
Trout • DET 5
Dietrich • CHW 5
Ross • PHA 5
Krakauskas • WSH 5
Benton • DET 5
Ostermueller • BOS 5

Hit By Pitch

Times Hit by a Pitch.

1. Mills • SLB 8
2. Bridges • DET 6
3. Trotter • SLB 5
Rich • BOS 5
Potter • PHA 5
Leonard • WSH 5
7. Appleton • WSH 4
Smith • 2TM 4
Trout • DET 4
10. Gomez • NYY 3
Kramer • SLB 3
Hadley • NYY 3
Harder • CLE 3
Kelley • WSH 3
Allen • CLE 3
Lee • CHW 3
Nelson • PHA 3
Parmelee • PHA 3
Gill • 2TM 3
Newsom • 2TM 3
Feller • CLE 3
Caster • PHA 3
Dickman • BOS 3

Batters Faced

Batters Faced

1. Newsom • 2TM 1,261
2. Feller • CLE 1,243
3. Leonard • WSH 1,133
4. Chase • WSH 1,019
5. Lee • CHW 1,008
6. Kennedy • 2TM 1,001
7. Kramer • SLB 998
8. Ruffing • NYY 968
9. Krakauskas • WSH 966
10. Rigney • CHW 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. Brown • CHW 56
2. Dean • PHA 38
3. Murphy • NYY 34
4. Appleton • WSH 27
5. Heving • BOS 26
6. Dickman • BOS 23
7. Benton • DET 18
8. Dobson • CLE 17
9. Thomas • 3TM 16
10. Lawson • 2TM 15
Eisenstat • 2TM 15

Adjusted ERA+

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

1. Grove • BOS 185
2. Lyons • CHW 173
3. Feller • CLE 154
4. Ruffing • NYY 148
5. Hadley • NYY 146
6. Bridges • DET 139
7. Newsom • 2TM 136
8. Trout • DET 135
9. Rigney • CHW 129
10. Gomez • NYY 128

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. Lyons • CHW 3.31
2. Feller • CLE 3.45
3. Bridges • DET 3.50
4. Grove • BOS 3.69
5. Rigney • CHW 3.76
6. Allen • CLE 3.85
7. Leonard • WSH 3.90
8. Ostermueller • BOS 3.92
9. Newsom • 2TM 3.93
10. Trout • DET 4.03

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. Feller • CLE 55
2. Grove • BOS 45
3. Newsom • 2TM 42
4. Ruffing • NYY 39
5. Lyons • CHW 33
6. Bridges • DET 29
7. Russo • NYY 26
8. Rigney • CHW 25
9. Gomez • NYY 25
10. Harder • 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. Feller • CLE 5.4
2. Grove • BOS 4.6
3. Newsom • 2TM 4.2
4. Ruffing • NYY 3.8
5. Lyons • CHW 3.3
6. Bridges • DET 2.8
7. Russo • NYY 2.6
8. Rigney • CHW 2.4
Gomez • NYY 2.4
10. Harder • CLE 2.3
Hadley • NYY 2.3

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. Feller • CLE 65.64
2. Grove • BOS 48.84
3. Ruffing • NYY 48.31
4. Newsom • 2TM 46.47
5. Harder • CLE 33.71
6. Leonard • WSH 33.51
7. Gomez • NYY 31.77
8. Bridges • DET 31.57
9. Russo • NYY 31.16
10. Hildebrand • NYY 30.88

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. Ruffing • NYY 5.9
2. Grove • BOS 4.9
3. Feller • CLE 4.6
4. Leonard • WSH 4.5
5. Lyons • CHW 4.4
6. Bridges • DET 3.1
7. Newsom • 2TM 3.0
8. Russo • NYY 2.9
9. Hildebrand • NYY 2.8
10. Harder • CLE 2.8

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. Feller • CLE 5.8
2. Ruffing • NYY 4.1
3. Lyons • CHW 3.8
4. Gomez • NYY 3.4
5. Grove • BOS 3.4
6. Newsom • 2TM 3.2
7. Russo • NYY 3.1
8. Bridges • DET 3.0
9. Hildebrand • NYY 2.9
10. Leonard • WSH 2.8

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. Ruffing • NYY 10.2
2. Donald • NYY 6.4
3. Gomez • NYY 5.3
4. Grove • BOS 5.0
5. Brown • CHW 4.6
6. Hildebrand • NYY 4.1
7. Murphy • NYY 3.9
8. Lyons • CHW 3.4
9. Hadley • NYY 2.4
10. Bridges • DET 2.2

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. Feller • CLE 6.8
2. Ruffing • NYY 5.0
3. Grove • BOS 5.0
4. Newsom • 2TM 4.4
5. Harder • CLE 3.4
6. Leonard • WSH 3.4
7. Gomez • NYY 3.2
8. Russo • NYY 3.2
9. Hildebrand • NYY 3.2
10. Bridges • DET 3.0

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