Official NHA Assessment

Race 2: AQUAZANIA MAIDEN PLATE (For all Maidens)

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Line Horse
Highwayman Harry
Reference for assessment
Exact Matches
0 / 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    Rabble Rouser        3    57.5    1    0.00     4.5   -     74           6     +6
2    Highwayman Harry     3    60.0    2    1.00     4.5   79    79           79    +0
3    Arizona Magic        4    58.5    3    2.50     5.0   61    75           75    +14
4    Willow Charm         2    60.0    4    2.80     3.0   70    82           82    +12
5    Brave Waam           3    60.0    5    10.10    4.5   -     79           79    +79
6    Jawbreaker           3    56.0    6    10.35    4.5   62    71           71    +9
7    Sivaji               3    60.0    7    11.45    4.5   -     79           79    +79
99   Tiger's Captain      2    60.0    99   0.00     3.0   -     82           82    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rabble Rouser - 78 6 +72 4.5 -
2 Highwayman Harry Line 79 78 79 -1 4.5
3 Arizona Magic 61 66 75 -9 5.0 -
4 Willow Charm 70 70 82 -12 3.0 -
5 Brave Waam - - 79 -79 4.5 -
6 Jawbreaker 62 62 71 -9 4.5 -
7 Sivaji - 60 79 -19 4.5 -
99 Tiger's Captain - 70 82 -12 3.0 -
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