Official NHA Assessment
Race 7: RACEHORSE OWNERS ASSOCIATION GRADUATION PLATE (3-year-old Fillies) (Maidens, 1 & 2 time winners for 3yr old fillies)
Line Horse
Orarari Gold
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
6 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Orarari Gold 2 57.0 1 0.00 6.5 101 101 101 +0 2 Feather Boa 2 60.0 2 0.70 6.5 99 107 107 +8 3 Typeset 2 57.0 3 1.50 6.5 93 101 101 +8 4 Glittering Girl 2 57.0 4 5.90 6.5 114 101 104 -10 5 Rockets Red Glare 3 57.0 5 8.65 9.5 97 95 95 -2 6 Daisy Buchanan 2 56.5 6 10.90 6.5 82 100 100 +18 99 Blindedbythelights 2 57.0 99 0.00 6.5 - 101 101 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Orarari Gold Line | 101 | 101 | 101 | ✓ Match | 6.5 | ||
| 2 | Feather Boa | 99 | 114 | 107 | +7 | 6.5 | - | |
| 3 | Typeset | 93 | 94 | 101 | -7 | 6.5 | - | |
| 4 | Glittering Girl | 114 | 114 | 104 | +10 | 6.5 | - | |
| 5 | Rockets Red Glare | 97 | 88 | 95 | -7 | 9.5 | - | |
| 6 | Daisy Buchanan | 82 | 74 | 100 | -26 | 6.5 | - | |
| 99 | Blindedbythelights | - | 51 | 101 | -50 | 6.5 | - |
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