Official NHA Assessment
Race 4: www.caperacing.co.za MAIDEN PLATE (For all Maidens)
Line Horse
Navy Strength
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Thunder Master 6 60.0 1 0.00 0.0 76 84 70 -6 2 Navy Strength 3 58.5 2 1.50 5.0 74 74 74 +0 3 Jack And Ginger 4 60.0 3 2.75 2.5 51 81 81 +30 4 Petrossian 3 60.0 4 3.50 5.0 69 75 75 +6 5 Flow Forever 3 60.0 5 4.25 5.0 71 75 75 +4 6 Guy Alexander 3 60.0 6 5.75 5.0 64 74 74 +10 7 Aeroforce 3 60.0 7 9.25 5.0 - 74 74 +74 99 Billionaire 3 60.0 99 0.00 5.0 - 74 74 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Thunder Master | 76 | 80 | 70 | +10 | 0.0 | - | |
| 2 | Navy Strength Line | 74 | 97 | 74 | +23 | 5.0 | ||
| 3 | Jack And Ginger | 51 | 63 | 81 | -18 | 2.5 | - | |
| 4 | Petrossian | 69 | 61 | 75 | -14 | 5.0 | - | |
| 5 | Flow Forever | 71 | 63 | 75 | -12 | 5.0 | - | |
| 6 | Guy Alexander | 64 | 72 | 74 | -2 | 5.0 | - | |
| 7 | Aeroforce | - | 60 | 74 | -14 | 5.0 | - | |
| 99 | Billionaire | - | - | 74 | -74 | 5.0 | - |
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