2003 AL Winning Percentage Leaders
Wins per decision
Pedro Martinez led the AL in winning percentage in 2003 with .778, 19 points ahead of Roy Halladay (.759).
Showing pitchers with at least 162.0 innings — the standard 1.0 inning per team game. Show all players
Led the AL in 2003
Pedro Martinez
Boston Red Sox
.778
Winning Percentage
.019 clear of Roy Halladay
Showing Winning Percentage and the stats that give it context
Full stat line
| # | Player | Team | W-L% | W | L | ERA | IP |
|---|---|---|---|---|---|---|---|
| 1 |
 Pedro Martinez
|
BOS | .778 | 14 | 4 | 2.22 | 186.2 |
| 2 |
 Roy Halladay
|
TOR | .759 | 22 | 7 | 3.25 | 266.0 |
| 3 |
 Jamie Moyer
|
SEA | .750 | 21 | 7 | 3.27 | 215.0 |
| 4 |
 Andy Pettitte
|
NYA | .724 | 21 | 8 | 4.02 | 208.1 |
| 5 |
 Derek Lowe
|
BOS | .708 | 17 | 7 | 4.47 | 203.1 |
| 6 |
 Esteban Loaiza
|
CHA | .700 | 21 | 9 | 2.90 | 226.1 |
| 7 |
 Tim Hudson
|
OAK | .696 | 16 | 7 | 2.70 | 240.0 |
| 8 |
 David Wells
|
NYA | .682 | 15 | 7 | 4.14 | 213.0 |
| 9 |
 Mike Mussina
|
NYA | .680 | 17 | 8 | 3.40 | 214.2 |
| 10 |
 Roger Clemens
|
NYA | .654 | 17 | 9 | 3.91 | 211.2 |
| 11 |
 Mark Mulder
|
OAK | .625 | 15 | 9 | 3.13 | 186.2 |
| 12 |
 Kenny Rogers
|
MIN | .619 | 13 | 8 | 4.57 | 195.0 |
| 13 |
 Tim Wakefield
|
BOS | .611 | 11 | 7 | 4.09 | 202.1 |
| 14 |
 Joel Pineiro
|
SEA | .593 | 16 | 11 | 3.78 | 211.2 |
| 15 |
 Kelvim Escobar
|
TOR | .591 | 13 | 9 | 4.29 | 180.1 |
| 16 |
 CC Sabathia
|
CLE | .591 | 13 | 9 | 3.60 | 197.2 |
| 17 |
 Sidney Ponson
|
BAL +1 | .586 | 17 | 12 | 3.75 | 216.0 |
| 18 |
 Brad Radke
|
MIN | .583 | 14 | 10 | 4.49 | 212.1 |
| 19 |
 John Burkett
|
BOS | .571 | 12 | 9 | 5.15 | 181.2 |
| 20 |
 Kyle Lohse
|
MIN | .560 | 14 | 11 | 4.61 | 201.0 |
| 21 |
 Brian Anderson
|
CLE +1 | .560 | 14 | 11 | 3.78 | 197.2 |
| 22 | Darrell May | KCA | .556 | 10 | 8 | 3.77 | 210.0 |
| 23 |
 Ramon Ortiz
|
ANA | .552 | 16 | 13 | 5.20 | 180.0 |
| 24 |
 Victor Zambrano
|
TBA | .545 | 12 | 10 | 4.21 | 188.1 |
| 25 |
 Ted Lilly
|
OAK | .545 | 12 | 10 | 4.34 | 178.1 |
| 26 |
 Barry Zito
|
OAK | .538 | 14 | 12 | 3.30 | 231.2 |
| 27 |
 Bartolo Colon
|
CHA | .536 | 15 | 13 | 3.87 | 242.0 |
| 28 |
 Gil Meche
|
SEA | .536 | 15 | 13 | 4.59 | 186.1 |
| 29 |
 Mark Buehrle
|
CHA | .500 | 14 | 14 | 4.14 | 230.1 |
| 30 |
 Jason Johnson
|
BAL | .500 | 10 | 10 | 4.18 | 189.2 |
| 31 |
 John Thomson
|
TEX | .481 | 13 | 14 | 4.85 | 217.0 |
| 32 |
 Jon Garland
|
CHA | .480 | 12 | 13 | 4.51 | 191.2 |
| 33 |
 Freddy Garcia
|
SEA | .462 | 12 | 14 | 4.51 | 201.1 |
| 34 |
 Ryan Franklin
|
SEA | .458 | 11 | 13 | 3.57 | 212.0 |
| 35 |
 Cory Lidle
|
TOR | .444 | 12 | 15 | 5.75 | 192.2 |
| 36 |
 Jason Davis
|
CLE | .421 | 8 | 11 | 4.68 | 165.1 |
| 37 |
 Jarrod Washburn
|
ANA | .400 | 10 | 15 | 4.43 | 207.1 |
| 38 |
 John Lackey
|
ANA | .385 | 10 | 16 | 4.63 | 204.0 |
| 39 |
 Mike Maroth
|
DET | .300 | 9 | 21 | 5.73 | 193.1 |
| 40 | Nate Cornejo | DET | .261 | 6 | 17 | 4.67 | 194.2 |
| 41 |
 Jeremy Bonderman
|
DET | .240 | 6 | 19 | 5.56 | 162.0 |