Official NHA Assessment

Race 2: RACE COAST MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Heritage Ridge
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 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    Heritage Ridge       3    60.0    1    0.00     1.5   73    73           73    +0
2    Pennys Choice        2    57.0    2    0.40     0.5   -     69           69    +69
3    Swift Serenity       2    57.0    3    1.15     0.5   -     69           69    +69
4    Alessia Asheville    3    60.0    4    3.40     1.5   61    73           73    +12
5    Laydelay             2    57.0    5    4.65     0.5   -     69           69    +69
6    Larking About        3    60.0    6    7.15     1.5   62    73           73    +11
7    One Dance            3    56.0    7    7.90     1.5   -     65           65    +65
8    Gutsy Baby           2    57.0    8    11.15    0.5   -     69           69    +69
9    Dibble               3    60.0    9    99.99    1.5   -     73           73    +73
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Heritage Ridge Line 73 59 73 -14 1.5
2 Pennys Choice - 65 69 -4 0.5 -
3 Swift Serenity - 74 69 +5 0.5 -
4 Alessia Asheville 61 57 73 -16 1.5 -
5 Laydelay - 76 69 +7 0.5 -
6 Larking About 62 55 73 -18 1.5 -
7 One Dance - 82 65 +17 1.5 -
8 Gutsy Baby - 62 69 -7 0.5 -
9 Dibble - 44 73 -29 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