Official NHA Assessment

Race 5: WSB PROUD SPONSOR OF SA RACING PINNACLE STAKES (Open to all horses)

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Line Horse
Red Maple
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    Red Maple            3    51.5    1    0.00     7.0   107   107          107   +0
2    Royal Edition        4    50.0    2    1.00     3.5   85    117          117   +32
3    Son Of Raj           5    60.0    3    3.00     0.0   119   141          141   +22
4    Second Base          4    52.0    4    4.20     3.5   102   117          117   +15
5    Thunee Playa         4    52.0    5    4.70     3.5   103   116          116   +13
6    Arumugam             6    50.0    6    5.10     0.0   97    118          118   +21
7    Afraad               8    50.0    7    9.10     0.0   79    118          118   +39
99   Good Council         2    52.0    99   0.00     0.0   -     122          122   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Red Maple Line 107 107 107 ✓ Match 7.0
2 Royal Edition 85 92 117 -25 3.5 -
3 Son Of Raj 119 116 141 -25 0.0 -
4 Second Base 102 99 117 -18 3.5 -
5 Thunee Playa 103 107 116 -9 3.5 -
6 Arumugam 97 74 118 -44 0.0 -
7 Afraad 79 79 118 -39 0.0 -
99 Good Council - 104 122 -18 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