Official NHA Assessment

Race 4: IN FULL FLIGHT HANDICAP (Listed) (Open)

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Line Horse
Socrates
Reference for assessment
Exact Matches
0 / 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    Isivunguvungu        3    52.5    1    0.00     2.5   96    88           96    +0
2    Socrates             7    60.5    2    2.50     0.0   109   109          109   +0
3    Mount Pleasant (AUS  4    59.0    3    2.70     0.0   106   106          106   +0
4    Ambiorix             3    58.5    4    3.45     2.5   108   100          100   -8
5    Pray For Rain        4    61.0    5    3.50     0.0   110   110          110   +0
6    Ashford Castle       4    52.0    6    4.00     0.0   92    92           92    +0
7    Intrepid             3    55.5    7    4.05     2.5   102   94           94    -8
8    Spydas Corner        4    56.0    8    4.30     0.0   100   100          100   +0
9    Safe Return          3    58.0    9    5.80     2.5   107   99           99    -8
10   Ad Altisima          5    58.5    10   7.00     0.0   105   105          105   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Isivunguvungu 96 130 96 +34 2.5 -
2 Socrates Line 109 111 109 +2 0.0
3 Mount Pleasant (AUS) 106 71 106 -35 0.0 -
4 Ambiorix 108 98 100 -2 2.5 -
5 Pray For Rain 110 106 110 -4 0.0 -
6 Ashford Castle 92 90 92 -2 0.0 -
7 Intrepid 102 73 94 -21 2.5 -
8 Spydas Corner 100 82 100 -18 0.0 -
9 Safe Return 107 83 99 -16 2.5 -
10 Ad Altisima 105 100 105 -5 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