Official NHA Assessment

Race 8: NEXT MEETING 6 APRIL KENILWORTH MR 88 HANDICAP (Open)

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Line Horse
Lion's Head
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
4 / 9
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    Adios Amigos         4    57.5    1    0.00     1.5   83    80           83    +0
2    Surjay               3    56.5    2    1.25     3.0   87    79           79    -8
3    Lion's Head          4    60.5    3    1.30     1.5   89    89           89    +0
4    Kariba Hall          4    59.5    4    3.30     1.5   87    85           85    -2
5    Red Lark             4    61.0    5    3.40     1.5   90    88           88    -2
6    Magical Midlands     4    61.0    6    4.65     1.5   90    87           87    -3
7    The Second Wave      5    59.5    7    4.75     0.0   87    87           87    +0
8    Night Ruler          3    57.0    8    4.95     3.0   88    76           78    -10
99   Han Solo             5    60.0    99   0.00     0.0   -     88           88    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Adios Amigos 83 55 83 -28 1.5 -
2 Surjay 87 121 79 +42 3.0 -
3 Lion's Head Line 89 84 89 -5 1.5
4 Kariba Hall 87 86 85 +1 1.5 -
5 Red Lark 90 88 88 ✓ Match 1.5 -
6 Magical Midlands 90 79 87 -8 1.5 -
7 The Second Wave 87 87 87 ✓ Match 0.0 -
8 Night Ruler 88 75 78 -3 3.0 -
99 Han Solo - 102 88 +14 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