Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Princess Of All
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
3 / 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    Empress Wu           3    60.0    1    0.00     2.5   61    73           67    +6
2    Princess Of All      3    60.0    2    1.40     2.5   73    73           73    +0
3    Winika               3    60.0    3    5.90     2.5   67    73           73    +6
4    Bright Comet         2    57.0    4    6.90     1.5   -     69           69    +69
5    Hurricane Power      2    60.0    5    8.40     1.5   62    75           75    +13
6    Foxy After Dark      3    60.0    6    8.70     2.5   -     73           73    +73
7    Moonface             2    57.0    7    9.30     1.5   -     69           69    +69
8    Blazing Breeze       2    55.5    8    11.50    1.5   -     66           66    +66
99   Lady Enid            2    57.0    99   0.00     1.5   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Empress Wu 61 64 67 -3 2.5 -
2 Princess Of All Line 73 72 73 -1 2.5
3 Winika 67 65 73 -8 2.5 -
4 Bright Comet - - 69 - 1.5 -
5 Hurricane Power 62 60 75 -15 1.5 -
6 Foxy After Dark - - 73 -73 2.5 -
7 Moonface - - 69 - 1.5 -
8 Blazing Breeze - - 66 - 1.5 -
99 Lady Enid - - 69 - 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