Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
After Hours
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
5 / 11
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    Dancing Dora         6    54.5    1    0.00     0.0   60    55           55    -5
2    Back To Basics       3    54.0    2    0.05     8.5   56    37           46    -10
3    Run For Isla         3    58.5    3    1.50     8.5   68    46           58    -10
4    After Hours          7    54.0    4    3.10     0.0   54    54           54    +0
5    Lulu's Boy           5    60.0    5    4.25     0.0   70    66           66    -4
6    Irrevocable Dream    5    60.0    6    5.00     0.0   68    66           66    -2
7    My Master            3    56.0    7    17.00    8.5   62    41           52    -10
8    Forgotten Time       3    58.0    8    25.00    8.5   67    45           57    -10
99   Laetitia's Angel     4    58.5    99   0.00     10.0  -     43           43    +0
99   Montmerency          3    60.0    99   0.00     8.5   -     49           49    +0
99   Giancarlo            2    56.0    99   0.00     5.5   -     47           47    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dancing Dora 60 53 55 -2 0.0 -
2 Back To Basics 56 72 46 +26 8.5 -
3 Run For Isla 68 58 58 ✓ Match 8.5 -
4 After Hours Line 54 79 54 +25 0.0
5 Lulu's Boy 70 71 66 +5 0.0 -
6 Irrevocable Dream 68 62 66 -4 0.0 -
7 My Master 62 57 52 +5 8.5 -
8 Forgotten Time 67 76 57 +19 8.5 -
99 Laetitia's Angel - 77 43 +34 10.0 -
99 Montmerency - 59 49 +10 8.5 -
99 Giancarlo - 45 47 -2 5.5 -
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