Horses in United States
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| Name | Last Run |
|---|---|
| Xmas Surprise | Del Mar, 29-Jul-23 |
| Xochil | Charles Town, 31-Oct-25 |
| Xpensive Princess | Mountaineer, 21-Oct-24 |
| Xplosive | Will Rogers Downs, 05-Oct-26 |
| Xplosive Fire | Zia Park, 11-Dec-23 |
| Xpozay | Lone Star Park, 12-Sep-26 |
| Xpressir | Hawthorne, 24-Oct-25 |
| Xpressiv | Will Rogers Downs, 30-Sep-26 |
| Xs Nme | Sunland Park, 04-Jan-26 |
| Xtended Streak | Mountaineer, 07-Aug-25 |
| Xtra Extraordinary | Keeneland, 13-Oct-24 |
| Xtra Spicy | Louisiana Downs, 24-Sep-24 |
| Xtrafine Xtina | Ferndale, 27-Aug-23 |
| Xtraordinarymotion | Mountaineer, 06-Aug-25 |
| Xtrasaucewelldone | Horseshoe Indianapolis, 30-Jul-24 |
| Xtrawberry Silk | Los Alamitos Racecourse, 24-Nov-25 |
| Xtreme Diva | Keeneland, 12-Oct-25 |
| Xtreme Mayhem | Turf Paradise, 22-Apr-26 |
| Xtreme Smoke Show | Keeneland, 06-Oct-25 |
| Xtreme V. I. P. | Turf Paradise, 02-Jan-23 |
| Xtremly | Sunland Park, 06-Jan-25 |
| Xxtravagant | Remington Park, 09-May-26 |
| Xy Face | Fonner Park, 04-May-25 |
| Xy Speed | Gulfstream, 10-Aug-26 |
| Xy Time | Tampa Bay Downs, 13-Feb-25 |
| Xylophone | Horseshoe Indianapolis, 23-May-24 |
| Xyngin Spitfire | Remington Park, 27-Sep-26 |
| Y City | Oaklawn Park, 13-Apr-26 |
| Y It Earp | |
| Y U Unbridled | Fairmount Park, 01-Oct-25 |
| Y Vee R | Emerald Downs, 30-Aug-26 |
| Y'allreadyforthis | Saratoga, 06-Sep-26 |
| Y'zin Up | Charles Town, 24-Apr-25 |
| Ya Mar | Woodbine, 27-Apr-24 |
| Ya'll Come | Santa Anita, 03-Oct-26 |
| Yaani | Turfway Park, 15-Mar-25 |
| Yaas | Nottingham, 01-Aug-24 |
| Yabba Dabba Dude | Charles Town, 21-Mar-25 |
| Yacht Boy | Woodbine, 16-Dec-24 |
| Yacht Intentions | Presque Isle Downs, 20-May-25 |
| Yacht Master | Churchill Downs, 28-Sep-26 |
| Yachtsmen | Charles Town, 06-Apr-24 |
| Yadi | Presque Isle Downs, 16-Sep-26 |
| Yadirayadirayadira | Tampa Bay Downs, 19-Apr-26 |
| Yaegiri | Tokyo, 04-Oct-26 |
| Yah Huh | Finger Lakes, 21-Jun-23 |
| Yahearmenow | Finger Lakes, 17-Sep-26 |
| Yahmo | Colonial Downs, 13-Aug-24 |
| Yahoo Omar | Delaware Park, 06-Sep-26 |
| Yaira | Churchill Downs, 26-Sep-26 |
| Yak | Lone Star Park, 27-Apr-24 |
| Yak Attack | Remington Park, 15-Nov-23 |
| Yakety Yak | Fair Grounds, 27-Feb-26 |
| Yakety Yock | Louisiana Downs, 01-Sep-24 |
| Yakozuki | Tampa Bay Downs, 01-Dec-24 |
| Yaleo | Santa Anita, 16-Oct-23 |
| Yalina | Horseshoe Indianapolis, 25-Sep-26 |
| Yalorde | Thistledown, 25-Sep-26 |
| Yalta | Kentucky Downs, 06-Sep-26 |
| Yamal | Laurel Park, 27-Sep-26 |