Official NHA Assessment

Race 5: DURBAN JULY VIEWING PARTY 5 JULY MR 102 HANDICAP (Open)

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Line Horse
Troppo Veloce
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 8
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    Chieftain            3    57.5    1    0.00     2.0   99    95           99    +0
2    Troppo Veloce        2    61.0    2    1.00     1.0   104   104          104   +0
3    Rodeo Drive          2    60.0    3    2.25     1.0   104   102          102   -2
4    Cosmic Star          3    61.5    4    2.45     2.0   105   103          103   -2
5    One Fell Swoop       2    60.0    5    2.50     1.0   102   102          102   +0
6    Sheldon              6    61.5    6    3.30     0.0   105   107          107   +2
7    Halberdier           4    54.5    7    4.00     2.5   91    88           88    -3
8    The Navy Lark        4    50.5    8    10.50    2.5   76    80           80    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chieftain 99 106 99 +7 2.0 -
2 Troppo Veloce Line 104 104 104 ✓ Match 1.0
3 Rodeo Drive 104 113 102 +11 1.0 -
4 Cosmic Star 105 105 103 +2 2.0 -
5 One Fell Swoop 102 97 102 -5 1.0 -
6 Sheldon 105 106 107 -1 0.0 -
7 Halberdier 91 83 88 -5 2.5 -
8 The Navy Lark 76 74 80 -6 2.5 -
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