The number of registered Thoroughbreds for the 4th generation sires on the top sire line pedigree for the registered foals of 2019.
| Sire Name | Registered Thoroughbreds |
|---|---|
| Mr. Prospector | 2983 |
| Northern Dancer | 2010 |
| Seattle Slew | 1529 |
| Storm Bird | 1434 |
| Fappiano | 1297 |
| A.P. Indy | 1290 |
| Raise a Native | 997 |
| Storm Cat | 995 |
| Bold Reasoning | 836 |
| Sadler's Wells | 639 |
| Cryptoclearance | 608 |
| Unbridled | 591 |
| Relaunch | 410 |
| In Excess (IRE) | 405 |
| Hail to Reason | 395 |
| Harlan | 354 |
| Vice Regent | 318 |
| Gone West | 312 |
| Nearctic | 295 |
| Siberian Express | 273 |
| Halo | 245 |
| Wavering Monarch | 176 |
| Danzig | 165 |
| Machiavellian | 160 |
| Deputy Minister | 142 |
| In Reality | 135 |
| Blushing Groom (FR) | 127 |
| Majestic Light | 113 |
| Roberto | 102 |
| Hennessy | 93 |
| Ride the Rails | 74 |
| Caro (IRE) | 73 |
| Great Above | 73 |
| Icecapade | 65 |
| Afleet | 53 |
| Minnesota Mac | 49 |
| Fortino II (FR) | 48 |
| Raja Baba | 48 |
| Quiet American | 42 |
| Runaway Groom | 40 |
| Tale of the Cat | 35 |
| Damascus | 30 |
| Red God | 30 |
| Native Dancer | 25 |
| Skywalker | 24 |
| Battle Joined | 23 |
| Forty Niner | 23 |
| Valid Appeal | 22 |
| Boldnesian | 20 |
| Buckpasser | 19 |
| Dixieland Band | 18 |
| Buckaroo | 17 |
| Cee's Tizzy | 15 |
| Cormorant | 15 |
| Intentionally | 14 |
| Sword Dancer | 14 |
| His Majesty | 13 |
| Bailjumper | 11 |
| Ack Ack | 8 |
| Gold Apollo | 8 |
| Green Desert | 8 |
| Gulch | 8 |
| Milkie's Desire | 8 |
| Conquistador Cielo | 7 |
| Jack Sprat | 7 |
| Milkie | 7 |
| Private Account | 7 |
| Pulpit | 7 |
| Sonny's Solo Halo | 7 |
| Kris S. | 6 |
| Mill Reef | 6 |
| Niniski | 6 |
| Nureyev | 6 |
| Speak John | 5 |
| Super Concorde | 5 |
| Bold Ruler | 4 |
| El Prado (IRE) | 4 |
| Literat (GER) | 4 |
| Majestic Prince | 4 |
| Wild Again | 4 |
| Birkhahn (GER) | 3 |
| Briartic | 3 |
| Hill Prince | 3 |
| Issue of Gold | 3 |
| Mocito Guapo (ARG) | 3 |
| Prince John | 3 |
| Sovereign Dancer | 3 |
| Is It True | 2 |
| Native Royalty | 2 |
| Private Terms | 2 |
| Turn-to | 2 |
| Az Igazi | 1 |
| Bagdad | 1 |
| Clever Trick | 1 |
| Dance in Time | 1 |
| Dewan | 1 |
| Five Eighty Four | 1 |
| Foolish Pleasure | 1 |
| Hoist the Flag | 1 |
| Mansingh | 1 |
| Mt. Livermore | 1 |
| Never Bend | 1 |
| Nijinsky II | 1 |
| Princequillo | 1 |
| Ribot | 1 |
| Tom Fool | 1 |
| Waajib (IRE) | 1 |
| Whiskey Road | 1 |
Source: The Jockey Club
Current through 4/29/2024