Official NHA Assessment

Race 8: NEXT RACE MEETING ON SATURDAY 20TH MAY CAPE A STAKES (For All Horses)

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Line Horse
Port Louis
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 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    Royal Aussie         2    58.5    1    0.00     0.0   112   110          110   -2
2    FireAlley            7    58.5    2    0.30     0.0   107   115          115   +8
3    Grinkov              2    55.5    3    1.30     0.0   105   107          107   +2
4    Port Louis           2    57.0    4    1.35     0.0   110   110          110   +0
5    Speed Machine        4    61.5    5    1.85     0.5   113   118          118   +5
6    Tout A Fait          3    57.0    6    2.15     1.5   104   107          107   +3
7    Linebacker           4    61.5    7    2.25     0.5   120   118          118   -2
8    My Bestie            7    54.0    8    5.50     0.0   99    101          101   +2
9    Light Speed          2    57.0    9    17.25    0.0   108   107          107   -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Royal Aussie 112 120 110 +10 0.0 -
2 FireAlley 107 107 115 -8 0.0 -
3 Grinkov 105 87 107 -20 0.0 -
4 Port Louis Line 110 106 110 -4 0.0
5 Speed Machine 113 104 118 -14 0.5 -
6 Tout A Fait 104 80 107 -27 1.5 -
7 Linebacker 120 108 118 -10 0.5 -
8 My Bestie 99 61 101 -40 0.0 -
9 Light Speed 108 103 107 -4 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