2021 Graded Racing Sire statistics
Results for offspring of sire Rio Quattro - Includes races up to and including 01/03/21
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| Track | Runners | Winners | Win rate |
| CentralPark | 16 | 2 | 12.5 |
| Crayford | 9 | 2 | 22.22 |
| Doncaster | 26 | 8 | 30.76 |
| Harlow | 35 | 6 | 17.14 |
| Henlow | 33 | 5 | 15.15 |
| Hove | 10 | 3 | 30 |
| Newcastle | 3 | 0 | 0 |
| Nottingham | 3 | 1 | 33.33 |
| PelawGrange | 11 | 2 | 18.18 |
| PerryBarr | 14 | 2 | 14.28 |
| Romford | 5 | 1 | 20 |
| Sheffield | 2 | 0 | 0 |
| Sunderland | 12 | 1 | 8.333 |
| Swindon | 4 | 0 | 0 |
| Towcester | 10 | 2 | 20 |
| Yarmouth | 14 | 3 | 21.42 |
| OVERALL | 207 | 38 | 18.35 |