Official NHA Assessment

Race 4: NOVEMBER STAKES (Open (Non-Black Type))

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Line Horse
Mr Fox
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
2 / 6
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    Fairy Knight         4    61.0    1    0.00     3.5   116   105          105   -11
2    Usa's Hope           2    58.0    2    2.25     0.0   98    109          109   +11
3    Mr Fox               3    58.0    3    3.25     6.0   96    96           96    +0
4    Anatolian Silver     3    52.0    4    5.75     6.0   78    82           82    +4
5    The Africa House     4    56.5    5    7.00     3.5   94    96           96    +2
99   Imaginable           3    56.5    99   0.00     6.0   -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fairy Knight 116 118 105 +13 3.5 -
2 Usa's Hope 98 97 109 -12 0.0 -
3 Mr Fox Line 96 99 96 +3 6.0
4 Anatolian Silver 78 78 82 -4 6.0 -
5 The Africa House 94 93 96 -3 3.5 -
99 Imaginable - 92 91 +1 6.0 -
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