Official NHA Assessment

Race 4: 4RACING THANKS AND APPRECIATES DUNCAN MCKENZIE RACING STABLES MAIDEN PLATE (For Maidens R15 000 Win Bonus ROA Members)

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Line Horse
Law Court
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
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    Law Court            3    60.0    1    0.00     1.5   68    68           68    +0
2    Us Open              3    60.0    2    1.50     1.5   68    71           71    +3
3    Regazzo Grande       2    56.0    3    1.75     0.0   -     66           66    +66
4    Racinante            2    57.0    4    3.75     0.0   59    66           66    +7
5    Smart Master         2    56.5    5    5.00     0.0   -     64           64    +64
6    Belle's First Wave   3    60.0    6    5.25     1.5   50    68           68    +18
7    Florida Hills        3    60.0    7    8.00     1.5   -     68           68    +68
99   Little Miss Kj       2    57.0    99   0.00     0.0   -     65           65    +0
99   Tune Again           6    57.0    99   0.00     0.0   -     65           65    +0
99   Red Centre           2    57.0    99   0.00     0.0   -     65           65    +0
99   Thalia's Galaxy      3    60.0    99   0.00     1.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Law Court Line 68 65 68 -3 1.5
2 Us Open 68 60 71 -11 1.5 -
3 Regazzo Grande - 72 66 +6 0.0 -
4 Racinante 59 50 66 -16 0.0 -
5 Smart Master - 63 64 -1 0.0 -
6 Belle's First Wave 50 51 68 -17 1.5 -
7 Florida Hills - 41 68 -27 1.5 -
99 Little Miss Kj - 53 65 -12 0.0 -
99 Tune Again - 50 65 -15 0.0 -
99 Red Centre - 72 65 +7 0.0 -
99 Thalia's Galaxy - 47 68 -21 1.5 -
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