Official NHA Assessment

Race 2: BORROWDALE D STAKES 68 (For All Horses with a nett rating of 68 & below)

Back to Race
Line Horse
Copper Fire
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Copper Fire          3    53.0    1    0.00     7.0   59    59           59    +0
2    Prince Of Denmark    4    54.0    2    0.05     4.0   54    67           67    +13
3    Red Top              5    60.0    3    1.50     0.0   67    90           90    +23
4    Zafar                3    58.5    4    2.80     7.0   64    72           72    +8
5    New Galaxy           4    50.0    5    6.30     4.0   46    59           59    +13
6    Forever Royal        4    50.0    6    6.80     4.0   36    59           59    +23
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Copper Fire Line 59 60 59 +1 7.0
2 Prince Of Denmark 54 51 67 -16 4.0 -
3 Red Top 67 70 90 -20 0.0 -
4 Zafar 64 78 72 +6 7.0 -
5 New Galaxy 46 45 59 -14 4.0 -
6 Forever Royal 36 36 59 -23 4.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. 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