Official NHA Assessment
Race 2: BORROWDALE D STAKES 68 (For All Horses with a nett rating of 68 & below)
Line Horse
Prince Of Denmark
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
2 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Copper Fire 3 56.0 1 0.00 0.5 64 56 56 -8 2 Audacious 2 57.5 2 3.00 0.0 66 62 62 -4 3 Prince Of Denmark 4 60.0 3 4.75 0.5 64 64 64 +0 4 Blazing Sky 3 53.5 4 5.25 0.5 59 51 51 -8 5 Forever Royal 4 50.0 5 5.50 0.5 47 44 44 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Copper Fire | 64 | 60 | 56 | +4 | 0.5 | - | |
| 2 | Audacious | 66 | 61 | 62 | -1 | 0.0 | - | |
| 3 | Prince Of Denmark Line | 64 | 51 | 64 | -13 | 0.5 | ||
| 4 | Blazing Sky | 59 | 46 | 51 | -5 | 0.5 | - | |
| 5 | Forever Royal | 47 | 36 | 44 | -8 | 0.5 | - |
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