Official NHA Assessment

Race 9: PERFECTLY PLACED MIDDLE STAKES (For All Horses with a nett rating of 102 & below)

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Line Horse
Coronation Time
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 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    Flower Of Saigon     4    57.5    1    0.00     1.0   102   85           85    -17
2    Otto Luyken          5    60.0    2    1.50     0.0   97    97           97    +0
3    Coronation Time      2    57.0    3    4.50     0.0   87    87           87    +0
4    Salvator Mundi       4    61.5    4    4.55     1.0   100   94           94    -6
5    Navy Strength        3    61.5    5    4.65     2.0   101   92           92    -9
6    Time For Love        4    54.5    6    4.75     1.0   94    79           84    -10
7    Rainbow Lorikeet     2    54.5    7    4.85     0.0   96    81           86    -10
8    Marshall Field       3    54.5    8    14.85    2.0   80    77           77    -3
99   Blue Bay             3    54.0    99   0.00     2.0   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Flower Of Saigon 102 102 85 +17 1.0 -
2 Otto Luyken 97 116 97 +19 0.0 -
3 Coronation Time Line 87 80 87 -7 0.0
4 Salvator Mundi 100 98 94 +4 1.0 -
5 Navy Strength 101 97 92 +5 2.0 -
6 Time For Love 94 105 84 +21 1.0 -
7 Rainbow Lorikeet 96 115 86 +29 0.0 -
8 Marshall Field 80 77 77 ✓ Match 2.0 -
99 Blue Bay - 84 76 +8 2.0 -
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