1999 MLB Winning Percentage Leaders
Wins per decision
Pedro Martinez led all of MLB in winning percentage in 1999 with .852, 6 points ahead of Mike Hampton (.846). It stands 82nd among all single seasons in MLB history.
Showing pitchers with at least 162.0 innings — the standard 1.0 inning per team game. Show all players
Led all of MLB in 1999
Pedro Martinez
Boston Red Sox
.852
Winning Percentage
.006 clear of Mike Hampton
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 | .852 | 23 | 4 | 2.07 | 213.1 |
| 2 |
 Mike Hampton
|
HOU | .846 | 22 | 4 | 2.90 | 239.0 |
| 3 |
 Bartolo Colon
|
CLE | .783 | 18 | 5 | 3.95 | 205.0 |
| 4 |
 Kevin Millwood
|
ATL | .720 | 18 | 7 | 2.68 | 228.0 |
| 5 | Kent Bottenfield | SLN | .720 | 18 | 7 | 3.97 | 190.1 |
| 6 |
 Mike Mussina
|
BAL | .720 | 18 | 7 | 3.50 | 203.1 |
| 7 |
 Kenny Rogers
|
OAK +1 | .714 | 10 | 4 | 4.19 | 195.1 |
| 8 |
 Curt Schilling
|
PHI | .714 | 15 | 6 | 3.54 | 180.1 |
| 9 |
 Freddy Garcia
|
SEA | .680 | 17 | 8 | 4.07 | 201.1 |
| 10 |
 Greg Maddux
|
ATL | .679 | 19 | 9 | 3.57 | 219.1 |
| 11 |
 Jose Lima
|
HOU | .677 | 21 | 10 | 3.58 | 246.1 |
| 12 |
 Kevin Brown
|
LAN | .667 | 18 | 9 | 3.00 | 252.1 |
| 13 |
 Russ Ortiz
|
SFN | .667 | 18 | 9 | 3.81 | 207.2 |
| 14 |
 Aaron Sele
|
TEX | .667 | 18 | 9 | 4.79 | 205.0 |
| 15 |
 Randy Johnson
|
ARI | .654 | 17 | 9 | 2.48 | 271.2 |
| 16 |
 Orlando Hernandez
|
NYA | .654 | 17 | 9 | 4.12 | 214.1 |
| 17 | Omar Daal | ARI | .640 | 16 | 9 | 3.65 | 214.2 |
| 18 |
 Jamie Moyer
|
SEA | .636 | 14 | 8 | 3.87 | 228.0 |
| 19 |
 David Wells
|
TOR | .630 | 17 | 10 | 4.82 | 231.2 |
| 20 |
 Dave Burba
|
CLE | .625 | 15 | 9 | 4.25 | 220.0 |
| 21 | Armando Reynoso | ARI | .625 | 10 | 6 | 4.37 | 167.0 |
| 22 | Todd Ritchie | PIT | .625 | 15 | 9 | 3.49 | 172.2 |
| 23 |
 Gil Heredia
|
OAK | .619 | 13 | 8 | 4.81 | 200.1 |
| 24 |
 Pete Harnisch
|
CIN | .615 | 16 | 10 | 3.68 | 198.1 |
| 25 |
 Hideki Irabu
|
NYA | .611 | 11 | 7 | 4.84 | 169.1 |
| 26 |
 Pedro Astacio
|
COL | .607 | 17 | 11 | 5.04 | 232.0 |
| 27 |
 Charles Nagy
|
CLE | .607 | 17 | 11 | 4.95 | 202.0 |
| 28 |
 Kirk Rueter
|
SFN | .600 | 15 | 10 | 5.41 | 184.2 |
| 29 | Masato Yoshii | NYN | .600 | 12 | 8 | 4.40 | 174.0 |
| 30 |
 Hideo Nomo
|
MIL | .600 | 12 | 8 | 4.54 | 176.1 |
| 31 |
 Andy Ashby
|
SDN | .583 | 14 | 10 | 3.80 | 206.0 |
| 32 |
 Roger Clemens
|
NYA | .583 | 14 | 10 | 4.60 | 187.2 |
| 33 | Steve Woodard | MIL | .579 | 11 | 8 | 4.52 | 185.0 |
| 34 |
 John Smoltz
|
ATL | .579 | 11 | 8 | 3.19 | 186.1 |
| 35 |
 Paul Byrd
|
PHI | .577 | 15 | 11 | 4.60 | 199.2 |
| 36 |
 Omar Olivares
|
ANA +1 | .577 | 15 | 11 | 4.16 | 205.2 |
| 37 |
 David Cone
|
NYA | .571 | 12 | 9 | 3.44 | 193.1 |
| 38 |
 Tom Glavine
|
ATL | .560 | 14 | 11 | 4.12 | 234.0 |
| 39 |
 Kelvim Escobar
|
TOR | .560 | 14 | 11 | 5.69 | 174.0 |
| 40 |
 Andy Pettitte
|
NYA | .560 | 14 | 11 | 4.70 | 191.2 |
| 41 | Terry Mulholland | CHN +1 | .556 | 10 | 8 | 4.39 | 170.1 |
| 42 |
 Scott Erickson
|
BAL | .556 | 15 | 12 | 4.81 | 230.1 |
| 43 | Rick Helling | TEX | .542 | 13 | 11 | 4.84 | 219.1 |
| 44 |
 Chan Ho Park
|
LAN | .542 | 13 | 11 | 5.23 | 194.1 |
| 45 |
 Jason Schmidt
|
PIT | .542 | 13 | 11 | 4.19 | 212.2 |
| 46 |
 Shane Reynolds
|
HOU | .533 | 16 | 14 | 3.85 | 231.2 |
| 47 |
 Kevin Appier
|
KCA +1 | .533 | 16 | 14 | 5.17 | 209.0 |
| 48 |
 John Halama
|
SEA | .524 | 11 | 10 | 4.22 | 179.0 |
| 49 |
 Chuck Finley
|
ANA | .522 | 12 | 11 | 4.43 | 213.1 |
| 50 |
 Andy Benes
|
ARI | .520 | 13 | 12 | 4.81 | 198.1 |
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