**Note:Route represents races of distances greater than 8 furlongs. Only sires with a calculated SPI and having at least 2 GA bred Route starters are listed. SPI is calculated when foals have raced in North America. Earnings do not include Japanese earnings. Categorical leaders are in bold.
Links to other lists by Earnings, stakes winners, winners, miler by spi, and sprint by spi. Return to Home Page.| Runners | Winners | StksWnrs | Route | |||
| Rank | Stallion (YOB, Sire) | Route/All | Route/All | Route/All | (Chief Earner, Earnings) | SPI |
| 1 | PRIME MERIDIAN (1995, The Prime Minister) | 4/7 | 1/2 | 0/0 | (Hurling, $38,270) | 0.43 |
| 2 | MUTED (1997, Dixieland Band) | 3/5 | 1/3 | 0/0 | (Hana Band, $5,094) | 0.23 |
| 3 | ROUNDUP (1999, Deputy Minister) | 2/3 | 0/2 | 0/0 | (Roundup Jade, $860) | 0.22 |
| 4 | FIRST AND ONLY (1987, Avatar) | 2/3 | 0/0 | 0/0 | (Distant Light, $3,300) | 0.14 |