Official NHA Assessment

Race 5: PINNACLE PLATE (90) (Race for all horses)

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Line Horse
Tigers Eagle
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
3 / 5
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    Dindingwe            4    58.0    1    0.00     5.5   90    90           90    +0
2    Tigers Eagle         3    52.0    2    3.00     9.0   74    74           74    +0
3    Zazu                 6    52.0    3    3.50     0.0   74    91           91    +17
4    Coffeeberry          5    53.5    4    5.25     0.0   78    92           92    +14
5    Citrusdal            8    60.0    5    11.25    0.0   87    105          105   +18
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dindingwe 90 95 90 +5 5.5 -
2 Tigers Eagle Line 74 79 74 +5 9.0
3 Zazu 74 71 91 -20 0.0 -
4 Coffeeberry 78 72 92 -20 0.0 -
5 Citrusdal 87 81 105 -24 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