Leading North American Sires of 2010 Unrestricted First-Time SWs
(through 23 August 2010)
| Rank | Stallion | Sire | Location | SWs |
| 1 | DISTORTED HUMOR | FORTY NINER | KY | 11 |
| 2 | DYNAFORMER | ROBERTO | KY | 10 |
| 3 | MINESHAFT | A.P. INDY | KY | 6 |
| SPEIGHTSTOWN | GONE WEST | KY | 6 | |
| STREET CRY | MACHIAVELLIAN | KY | 6 | |
| 6 | EL CORREDOR | MR. GREELEY | KY | 5 |
| EMPIRE MAKER | UNBRIDLED | KY | 5 | |
| GIANT'S CAUSEWAY | STORM CAT | KY | 5 | |
| INDIAN CHARLIE | IN EXCESS | KY | 5 | |
| MEDAGLIA D'ORO | EL PRADO | KY | 5 | |
| TAPIT | PULPIT | KY | 5 | |
| UNBRIDLED'S SONG | UNBRIDLED | KY | 5 | |