With the Kentucky Derby just over a month away, the final chance to nominate horses to the 2007 Triple Crown closed on March 31. Early nominations, which only cost $600, closed in January while the late nominations were $6000 each. This year only 10 colts were nominated late, four less than last year. Most are a bit obscure with the best likely Catman Running, winner of the John Battaglia Memorial Stakes at Turfway who is headed to the Illinois Derby next.
If any additional horses not already nominated want to enter, they will have to be supplemented. Cost for this is $150,000 for the Kentucky Derby and $100,000 for the Preakness and Belmont. Even if a horse is supplemented, he is the lowest in priority for getting in the race with any early or late nominee getting preference over him. For the early and late nominees, graded stakes earnings determine their priority with the field limited to 20 starters for the Kentucky Derby with no also-eligibles allowed.
| Horse | Sire | Owner | Trainer |
| Catman Running | Joe Harris | Eric R. Reed | |
| Vow To Greatness | Paul Knuckley | Randy Allen | |
| Delightful Kiss | Hobeau Farms | Pete Anderson | |
| Etude | Fitzhugh LLC (Robert Meyerhoff) | Richard W. Small | |
| Reptilian Smarts | Christopher J. Hall | Tim Ritvo | |
| Medici Code | Herrick Racing | Darrell Vienna | |
| Quite Acceptable | Silver Wing Stables | Shannon Ritter | |
| Cristobal | Edmund Gann | Jean-Claude Rouget | |
| Love Dubai | Ron Peltz | Mike Maker | |
| Court The King | Marta Racing Ventures | John Sadler |


