Official NHA Assessment

Race 4: RACING240 FOR RACING. FOR YOU MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Aga Heat
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Risky Business       3    60.0    1    0.00     3.5   69    72           72    +3
2    Aga Heat             3    60.0    2    0.40     3.5   72    72           72    +0
3    In The Ether         6    60.0    3    3.25     0.0   66    79           79    +13
4    Mercurial Jet        3    60.0    4    7.75     3.5   66    72           72    +6
5    On Duty              3    60.0    5    11.25    3.5   -     72           72    +72
6    Luv You Too          3    60.0    6    13.00    3.5   -     72           72    +72
7    Flying Vixen         3    58.5    7    17.75    3.5   -     69           69    +69
99   Rockingthetimeaway   3    60.0    99   0.00     3.5   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Risky Business 69 75 72 +3 3.5 -
2 Aga Heat Line 72 74 72 +2 3.5
3 In The Ether 66 63 79 -16 0.0 -
4 Mercurial Jet 66 59 72 -13 3.5 -
5 On Duty - 45 72 -27 3.5 -
6 Luv You Too - 45 72 -27 3.5 -
7 Flying Vixen - 32 69 -37 3.5 -
99 Rockingthetimeaway - 62 72 -10 3.5 -
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