Official NHA Assessment
Race 1: WELCOME TO NELSON MANDELA BAY OPEN MAIDEN (For all Maidens)
Line Horse
Stand Up
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
2 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Captain Clever 2 57.5 1 0.00 0.0 65 80 71 +6 2 River Fern 2 50.5 2 2.25 0.0 75 69 69 -6 3 Stand Up 3 56.0 3 2.30 8.0 63 63 63 +0 4 Hokusai 3 54.0 4 5.80 8.0 54 57 57 +3 5 Pibe De Oro 3 54.5 5 6.80 8.0 68 58 58 -10 6 Playmaker 3 60.0 6 8.55 8.0 - 69 69 +69 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Captain Clever | 65 | 63 | 71 | -8 | 0.0 | - | |
| 2 | River Fern | 75 | 73 | 69 | +4 | 0.0 | - | |
| 3 | Stand Up Line | 63 | 62 | 63 | -1 | 8.0 | ||
| 4 | Hokusai | 54 | 52 | 57 | -5 | 8.0 | - | |
| 5 | Pibe De Oro | 68 | 66 | 58 | +8 | 8.0 | - | |
| 6 | Playmaker | - | 68 | 69 | -1 | 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