Official NHA Assessment

Race 2: CLASSIFIED STAKES 71 (For horses with nett rating of 71 and below)

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Line Horse
Empire Blue
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 10
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Burn Bright          3    55.5    1    0.00     2.5   68    57           57    -11
2    Empire Blue          4    60.0    2    3.00     1.0   71    71           71    +0
3    Shes Everything      3    57.0    3    3.50     2.5   71    61           61    -10
4    Aerial Display       5    58.5    4    3.75     0.0   68    69           69    +1
5    When Evening Comes   5    51.0    5    8.75     0.0   58    53           53    -5
6    Copper Fire          3    52.5    6    9.00     2.5   60    51           51    -9
7    Mizzen Sword         3    58.5    7    10.50    2.5   66    63           63    -3
8    House Of Lords       3    51.0    8    22.50    2.5   49    48           48    -1
99   Royal Lytham         4    57.0    99   0.00     1.0   -     63           63    +0
99   Ono No Komachi       3    55.5    99   0.00     2.5   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Burn Bright 68 68 57 +11 2.5 -
2 Empire Blue Line 71 71 71 ✓ Match 1.0
3 Shes Everything 71 71 61 +10 2.5 -
4 Aerial Display 68 68 69 -1 0.0 -
5 When Evening Comes 58 58 53 +5 0.0 -
6 Copper Fire 60 60 51 +9 2.5 -
7 Mizzen Sword 66 66 63 +3 2.5 -
8 House Of Lords 49 49 48 +1 2.5 -
99 Royal Lytham - 69 63 +6 1.0 -
99 Ono No Komachi - 66 57 +9 2.5 -
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