Horses can be placed on this list for reasons of illness, overall soundness or fitness to race.
| Horse Name | Horse Breed | Date On | Track On | Date Off | Official Vet Exam | Work | Qualify | Vet List Type |
|---|---|---|---|---|---|---|---|---|
| Starlight Ridge | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| State of Honor | Thoroughbred | Fort Erie Racetrack | No | X | ||||
| STEAL THE MOMENT | Standardbred | Leamington Raceway | No | X | Long List | |||
| STEELWHEEL HANOVER | Standardbred | Mohawk Park | No | Short List | ||||
| Stella Ella Ola | Thoroughbred | Woodbine Racetrack | No | X | ||||
| STOPWATCH | Standardbred | Mohawk Park | Yes | X | Long List | |||
| Storm Ruler | Thoroughbred | Woodbine Racetrack | No | X | ||||
| Stormin' Humor | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Storming Lady | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| Stormy Derby Day | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Strawberry Scarlet | Thoroughbred | Fort Erie Racetrack | No | X | ||||
| Stretch Pass | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Stribling | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| Strike With Mike | Thoroughbred | Fort Erie Racetrack | No | X | ||||
| Subtle Comment | Thoroughbred | Fort Erie Racetrack | No | X | ||||
| Sugar Surge | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Summer Load | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| Summer Sunset | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| Sun Vision | Thoroughbred | Woodbine Racetrack | No | X | ||||
| Sunday Quickie | Quarter Horse | Ajax Downs | Yes | X |