So take a look first at the Career Winning Percentage list. Only a handful of pitchers with a significant number of decisions won twice as many as they lost:
Rank | Name | Won | Lost | Percent | Career |
1. | Dave Foutz | 147 | 66 | .69014 | 1884-94 (played through 1896) |
2. | Whitey Ford | 236 | 106 | .69006 | 1950, 53-67 |
3. | Bob Caruthers | 218 | 99 | .688 | 1884-92 (played through 1893) |
4. | Lefty Grove | 300 | 141 | .680 | 1925-41 |
5. | Vic Raschi | 132 | 66 | .667 | 1946-55 |
Foutz and Caruthers played together on good teams: a composite winning percentage of .639 -- .667 when both were regular pitchers. The thing to do, then, is to compare Foutz and Caruthers (individually and together) to the record of the team without either of them.
Foutz | Caruthers | Both | Team | Others | ||||||||||||
Year | w | l | % | w | l | % | w | l | % | w | l | % | w | l | % | |
1884 | 15 | 6 | .714 | 7 | 2 | .778 | 22 | 8 | .733 | 67 | 40 | .626 | 45 | 32 | .584 | |
1885 | 33 | 14 | .702 | 40 | 13 | .755 | 73 | 27 | .730 | 79 | 33 | .705 | 6 | 6 | .500 | |
1886 | 41 | 16 | .719 | 30 | 14 | .682 | 71 | 30 | .703 | 93 | 46 | .669 | 22 | 16 | .579 | |
1887 | 25 | 12 | .676 | 29 | 9 | .763 | 54 | 21 | .720 | 95 | 40 | .704 | 41 | 19 | .683 | |
1888 | 12 | 7 | .632 | 29 | 15 | .659 | 41 | 22 | .651 | 88 | 52 | .629 | 47 | 30 | .610 | |
with St. Louis | 126 | 55 | .696 | 135 | 53 | .718 | 261 | 108 | .707 | 422 | 211 | .667 | 161 | 103 | .610 | |
1889 | 3 | 0 | 1.000 | 40 | 11 | .784 | 43 | 11 | .796 | 93 | 44 | .679 | 50 | 33 | .602 | |
1890 | 2 | 1 | .667 | 23 | 11 | .677 | 25 | 12 | .676 | 86 | 43 | .667 | 61 | 31 | .663 | |
1891 | 3 | 2 | .600 | 18 | 14 | .563 | 21 | 16 | .568 | 61 | 76 | .445 | 40 | 60 | .400 | |
with Brooklyn | 8 | 3 | .727 | 81 | 36 | .692 | 89 | 39 | .695 | 240 | 163 | .596 | 151 | 124 | .549 | |
As Teammates | 134 | 58 | .698 | 216 | 89 | .708 | 350 | 147 | .704 | 662 | 374 | .639 | 312 | 227 | .579 |
When both were starting pitchers, Foutz and Caruthers won about 71% of the time, while other pitchers on their teams won about 61% of the time, leaving the team as a whole winning 2 out of three games. One important thing to note here is that the difference between 61% and 71% in this context is much greater than that between 41% and 51%. This is one reason that these comparisons tend to overvalue the contribution of a good pitcher on a bad team, and undervalue that of a good pitcher on a good team. Because Foutz and Caruthers won about 10% more often than their fellow pitchers, does that mean they were 10% better than average? No, because the other fellows weren't average, either. They were, by definition, good, and Foutz and Caruthers were 10% better.
They played on only one bad team (Brooklyn, 1891), and together went 21-16 for a team that finished 15 games under .500. Their combined winning percentage that year was the lowest of their careers, but still 17% above that of their pitching mates. In 1889, 1890, and 1891, Foutz was mostly a first baseman, so their combined pitching stats for those years are primarily Caruthers's. In his only year pitching without Foutz on the team, Caruthers went 2-10, dropping his career winning percentage under 70 and out of first place.
Just on their pitching numbers they were great, and both were ferocious hitters as well. In 1887, when he was 25-12 as a pitcher, Foutz hit .357 and drove in 108 runs in 102 games; Caruthers, 29-9 on the mound, matched Foutz's .357 average, drove in 73, and scored 102. Foutz hit .276 for his career, Caruthers .282.
Neither Foutz nor Caruthers will likely ever be inducted into the Hall of Fame. Foutz simply doesn't have enough decisions. Caruthers is probably the best pitcher eligible who is not in the Hall, but as Bill James has said, what would enshrining him at this late date accomplish? Still, they deserve to be recognized as probably the greatest pitching tandem in history.