Official NHA Assessment

Race 5: MERIT RATED 85 HANDICAP (Open)

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Line Horse
Jubilee
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
0 / 4
Within 2 points
Significant Diffs
3 / 4
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    Abayyaan             3    60.0    1    0.00     7.0   85    67           85    +0
2    Jubilee              7    60.5    2    1.00     0.0   86    86           86    +0
3    Tradition            4    57.0    3    2.50     4.5   79    68           69    -10
4    Justadoreher         5    55.5    4    7.50     0.0   76    72           72    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Abayyaan 85 94 85 +9 7.0 -
2 Jubilee Line 86 72 86 -14 0.0
3 Tradition 79 77 69 +8 4.5 -
4 Justadoreher 76 68 72 -4 0.0 -
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