Official NHA Assessment

Race 7: NELSON MANDELA BAY RACING EAST CAPE POLY CHALLENGE (Open - Leg 1 EC Poly Challenge (Non-Blk Type))

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Line Horse
Usa's Hope
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
2 / 7
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    Mercantour           5    62.0    1    0.00     0.0   111   114          114   +3
2    Fairy Knight         4    62.0    2    0.10     12.0  118   90           108   -10
3    Golden Pavilion      2    58.0    3    0.35     7.0   89    92           92    +3
4    Usa's Hope           2    61.0    4    1.10     7.0   98    98           98    +0
5    Dubai Hills          4    59.5    5    2.10     12.0  94    85           85    -9
6    Champonelle          4    58.0    6    4.35     12.0  90    82           82    -8
7    Pas De Nom           2    59.5    7    8.85     7.0   94    95           95    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mercantour 111 113 114 -1 0.0 -
2 Fairy Knight 118 118 108 +10 12.0 -
3 Golden Pavilion 89 95 92 +3 7.0 -
4 Usa's Hope Line 98 97 98 -1 7.0
5 Dubai Hills 94 95 85 +10 12.0 -
6 Champonelle 90 87 82 +5 12.0 -
7 Pas De Nom 94 91 95 -4 7.0 -
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