Official NHA Assessment
Race 3: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (For Maidens R15 000 Win Bonus ROA Members)
Line Horse
Chasing Cheetahs
Reference for assessment
Exact Matches
1 / 18
Calculated = Official
Close Matches
5 / 18
Within 2 points
Significant Diffs
10 / 18
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Bournemouth 5 60.0 1 0.00 0.0 67 62 62 -5 2 Green Falcon 2 60.0 2 3.25 0.0 71 64 64 -7 3 Sjambok 2 60.0 3 3.50 0.0 51 63 63 +12 4 Chasing Cheetahs 3 60.0 4 4.00 2.5 58 58 58 +0 5 Law Court 3 60.0 5 4.25 2.5 71 58 61 -10 6 Opening Ceremony 3 60.0 6 5.25 2.5 56 57 57 +1 7 Painite 5 60.0 7 5.35 0.0 - 62 62 +62 8 Sassy 2 57.0 8 7.85 0.0 65 56 56 -9 9 American Dazzler 2 60.0 9 7.90 0.0 61 62 62 +1 10 Shunmyo 3 60.0 10 8.00 2.5 - 57 57 +57 11 So Dacha 3 60.0 11 8.75 2.5 52 57 57 +5 12 Racinante 2 57.0 12 10.00 0.0 67 56 57 -10 13 Duchess Of Africa 6 55.5 13 10.75 0.0 35 53 53 +18 14 White Witch 2 57.0 14 14.50 0.0 65 56 56 -9 15 Gimme A Dream 4 60.0 15 15.50 1.0 50 60 60 +10 16 Happiness Is 3 60.0 16 30.00 2.5 - 57 57 +57 99 Lord Nelson 3 60.0 99 0.00 2.5 - 57 57 +0 99 Ponderosa Pine 2 57.0 99 0.00 0.0 - 56 56 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Bournemouth | 67 | 110 | 62 | +48 | 0.0 | - | |
| 2 | Green Falcon | 71 | 62 | 64 | -2 | 0.0 | - | |
| 3 | Sjambok | 51 | 56 | 63 | -7 | 0.0 | - | |
| 4 | Chasing Cheetahs Line | 58 | 58 | 58 | ✓ Match | 2.5 | ||
| 5 | Law Court | 71 | 65 | 61 | +4 | 2.5 | - | |
| 6 | Opening Ceremony | 56 | 55 | 57 | -2 | 2.5 | - | |
| 7 | Painite | - | 82 | 62 | +20 | 0.0 | - | |
| 8 | Sassy | 65 | 55 | 56 | -1 | 0.0 | - | |
| 9 | American Dazzler | 61 | 59 | 62 | -3 | 0.0 | - | |
| 10 | Shunmyo | - | 45 | 57 | -12 | 2.5 | - | |
| 11 | So Dacha | 52 | 48 | 57 | -9 | 2.5 | - | |
| 12 | Racinante | 67 | 50 | 57 | -7 | 0.0 | - | |
| 13 | Duchess Of Africa | 35 | 37 | 53 | -16 | 0.0 | - | |
| 14 | White Witch | 65 | 52 | 56 | -4 | 0.0 | - | |
| 15 | Gimme A Dream | 50 | 50 | 60 | -10 | 1.0 | - | |
| 16 | Happiness Is | - | 29 | 57 | -28 | 2.5 | - | |
| 99 | Lord Nelson | - | 55 | 57 | -2 | 2.5 | - | |
| 99 | Ponderosa Pine | - | 63 | 56 | +7 | 0.0 | - |
Assessment Methodology
Calculation Steps:
- Identify Line Horse - consistent performer used as reference
- Calculate WFA Allowance based on age, distance, and month
- Apply Drag Adjustment for beaten margin
- Calculate Actual Weight Performance:
Weight - Drag - WFA - Compare to Line Horse to determine race rating
- Apply special rules (maiden caps, layoff allowance)
Key Formulas:
- Drag Effect: Varies by distance (see Benchmarks page)
- 1 length ≈ 1kg at 1 mile (1600m)
- WFA Scale: Based on Admiral Rous's 1855 table
- Rating Points: 1kg = 2 rating points