Official NHA Assessment

Race 5: TAB 4RACING APP PINNACLE STAKES (Open to all horses)

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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
5 / 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   108   104          104   -4
2    Speed Racer          4    58.0    2    3.25     0.0   87    96           96    +9
3    Usa's Hope           2    61.0    3    4.50     1.5   99    99           99    +0
4    Cliff Top            2    62.0    4    6.25     1.5   101   101          101   +0
5    Kabon Kapi           5    57.0    5    8.50     0.0   94    94           94    +0
6    First Origin         2    62.0    6    8.60     1.5   105   101          101   -4
7    Abound               4    58.0    7    8.85     0.0   86    96           96    +10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mercantour 108 113 104 +9 0.0 -
2 Speed Racer 87 88 96 -8 0.0 -
3 Usa's Hope Line 99 97 99 -2 1.5
4 Cliff Top 101 109 101 +8 1.5 -
5 Kabon Kapi 94 96 94 +2 0.0 -
6 First Origin 105 91 101 -10 1.5 -
7 Abound 86 77 96 -19 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