Official NHA Assessment
Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (3-year-old Fillies) (For Maiden 3-year-old Fillies)
Line Horse
Glitterfox
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Begonia 2 60.0 1 0.00 6.5 63 64 64 +1 2 Kind Of Blue 2 60.0 2 0.05 6.5 - 64 64 +64 3 Divine Design 3 60.0 3 0.15 9.5 - 58 58 +58 4 Glitterfox 2 60.0 4 2.40 6.5 64 64 64 +0 5 Nellie Bly 2 60.0 5 5.65 6.5 71 64 64 -7 6 Kommetjie 2 60.0 6 6.65 6.5 42 64 64 +22 7 Mia Calice 2 60.0 7 7.90 6.5 65 64 64 -1 8 Make A Deal 3 60.0 8 8.15 9.5 - 58 58 +58 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Begonia | 63 | 66 | 64 | +2 | 6.5 | - | |
| 2 | Kind Of Blue | - | 58 | 64 | -6 | 6.5 | - | |
| 3 | Divine Design | - | 71 | 58 | +13 | 9.5 | - | |
| 4 | Glitterfox Line | 64 | 57 | 64 | -7 | 6.5 | ||
| 5 | Nellie Bly | 71 | 71 | 64 | +7 | 6.5 | - | |
| 6 | Kommetjie | 42 | 49 | 64 | -15 | 6.5 | - | |
| 7 | Mia Calice | 65 | 60 | 64 | -4 | 6.5 | - | |
| 8 | Make A Deal | - | 40 | 58 | -18 | 9.5 | - |
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