Official NHA Assessment

Race 6: SA DERBY 4 APRIL FM 79 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Winds Of Grace
Reference for assessment
Exact Matches
5 / 11
Calculated = Official
Close Matches
6 / 11
Within 2 points
Significant Diffs
1 / 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    Bright And Brazen    2    58.5    1    0.00     3.0   85    79           85    +0
2    Winds Of Grace       3    55.5    2    3.30     4.5   70    70           70    +0
3    Far Reaching         2    53.0    3    3.70     3.0   65    68           68    +3
4    Sakura Hanami        3    58.5    4    3.95     4.5   82    76           76    -6
5    Spiritrix            2    58.5    5    5.95     3.0   82    79           79    -3
6    Willow Lady          2    54.0    6    6.25     3.0   73    70           70    -3
7    Waiting On Charlie   2    56.0    7    6.75     3.0   77    74           74    -3
99   Far Beyond           2    58.5    99   0.00     3.0   -     79           79    +0
99   Royal Horizon        3    54.5    99   0.00     4.5   -     68           68    +0
99   Bell Of Angelus      2    54.5    99   0.00     3.0   -     71           71    +0
99   Misty Metal          3    56.0    99   0.00     4.5   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bright And Brazen 85 97 85 +12 3.0 -
2 Winds Of Grace Line 70 72 70 +2 4.5
3 Far Reaching 65 63 68 -5 3.0 -
4 Sakura Hanami 82 80 76 +4 4.5 -
5 Spiritrix 82 79 79 ✓ Match 3.0 -
6 Willow Lady 73 67 70 -3 3.0 -
7 Waiting On Charlie 77 74 74 ✓ Match 3.0 -
99 Far Beyond - 82 79 +3 3.0 -
99 Royal Horizon - 68 68 ✓ Match 4.5 -
99 Bell Of Angelus - 71 71 ✓ Match 3.0 -
99 Misty Metal - 71 71 ✓ Match 4.5 -
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