Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE CLASS 5 (Open. Benchmark at 60.0kg = 70)

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Line Horse
Gardener's Pride
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
3 / 9
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    Ultra Quick          6    55.0    1    0.00     0.0   68    71           71    +3
2    Spaarne Rivier       3    60.0    2    1.30     7.0   84    70           74    -10
3    Gardener's Pride     3    56.5    3    1.80     7.0   63    63           63    +0
4    Town Crier           2    58.0    4    1.90     0.0   80    80           80    +0
5    Deputy Chief         3    58.0    5    2.00     7.0   66    66           66    +0
6    Viva Spirit          2    59.5    6    3.10     0.0   72    82           82    +10
7    Banzai Pipeline      7    53.0    7    4.90     0.0   64    67           67    +3
8    Pembury              2    59.5    8    6.40     0.0   83    80           80    -3
9    Animal Impact        4    58.5    9    7.60     4.0   67    70           70    +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ultra Quick 68 71 71 ✓ Match 0.0 -
2 Spaarne Rivier 84 84 74 +10 7.0 -
3 Gardener's Pride Line 63 63 63 ✓ Match 7.0
4 Town Crier 80 81 80 +1 0.0 -
5 Deputy Chief 66 64 66 -2 7.0 -
6 Viva Spirit 72 72 82 -10 0.0 -
7 Banzai Pipeline 64 62 67 -5 0.0 -
8 Pembury 83 75 80 -5 0.0 -
9 Animal Impact 67 64 70 -6 4.0 -
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