**Note: Only sires with a calculated SPI and having at least 2 GA bred Dirt 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, turf by spi, and all weather by spi. Return to Home Page.| Runners | Winners | StksWnrs | Dirt | |||
| Rank | Stallion (YOB, Sire) | Dirt/All | Dirt/All | Dirt/All | (Chief Earner, Earnings) | SPI |
| 1 | ROUNDUP (1999, Deputy Minister) | 3/3 | 3/3 | 0/0 | (Roundup Jade, $21,670) | 1.19 |
| 2 | PRIME MERIDIAN (1995, The Prime Minister) | 6/6 | 4/4 | 0/0 | (Prime Player, $35,590) | 0.72 |
| 3 | PROSPECTOR STREET (1998, Mr. Prospector) | 2/2 | 1/1 | 0/0 | (Sultry Prospector, $13,850) | 0.44 |
| 4 | MUTED (1997, Dixieland Band) | 2/2 | 0/0 | 0/0 | (Exotic Band, $3,870) | 0.11 |
| 5 | ROARING CAMP (1991, Forty Niner) | 2/2 | 0/0 | 0/0 | (Grubby's Gift, $1,204) | 0.10 |
| 6 | FIRST AND ONLY (1987, Avatar) | 3/3 | 0/0 | 0/0 | (Only Lassie, $950) | 0.07 |