Official NHA Assessment
Race 4: WWW.GAUTENGSUMMERCUP.CO.ZA WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)
Line Horse
Voshaarnooi
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
10 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Coffeeberry 5 58.5 1 0.00 0.0 66 59 59 -7 2 Aunt Pittypat 3 58.0 2 2.00 8.0 - 45 45 +45 3 Queen Britanna 2 58.0 3 2.25 0.0 57 61 61 +4 4 Voshaarnooi 2 58.0 4 4.00 0.0 59 59 59 +0 5 Batik 3 60.0 5 4.25 8.0 57 47 47 -10 6 Silk Garden 3 60.0 6 6.25 8.0 57 46 47 -10 7 Hayley's Promise 3 58.0 7 6.35 8.0 62 42 52 -10 8 Island Beauty 3 60.0 8 6.50 8.0 60 46 50 -10 9 Sassy 2 58.0 9 6.75 0.0 69 58 59 -10 10 Mrs Shelby 2 58.0 10 6.85 0.0 58 58 58 +0 11 Spring Of Elixir 3 58.0 11 12.25 8.0 - 42 42 +42 99 Broadlands 3 58.0 99 0.00 8.0 - 42 42 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Coffeeberry | 66 | 72 | 59 | +13 | 0.0 | - | |
| 2 | Aunt Pittypat | - | 65 | 45 | +20 | 8.0 | - | |
| 3 | Queen Britanna | 57 | 57 | 61 | -4 | 0.0 | - | |
| 4 | Voshaarnooi Line | 59 | 50 | 59 | -9 | 0.0 | ||
| 5 | Batik | 57 | 57 | 47 | +10 | 8.0 | - | |
| 6 | Silk Garden | 57 | 56 | 47 | +9 | 8.0 | - | |
| 7 | Hayley's Promise | 62 | 58 | 52 | +6 | 8.0 | - | |
| 8 | Island Beauty | 60 | 63 | 50 | +13 | 8.0 | - | |
| 9 | Sassy | 69 | 55 | 59 | -4 | 0.0 | - | |
| 10 | Mrs Shelby | 58 | 50 | 58 | -8 | 0.0 | - | |
| 11 | Spring Of Elixir | - | 55 | 42 | +13 | 8.0 | - | |
| 99 | Broadlands | - | 69 | 42 | +27 | 8.0 | - |
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