Official NHA Assessment

Race 3: RACE COAST MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Act Of Grace
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
8 / 10
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    Act Of Grace         2    57.0    1    0.00     0.0   83    83           83    +0
2    Tipperary            3    60.0    2    2.70     8.5   73    74           74    +1
3    Takatalvi            3    60.0    3    4.10     8.5   63    73           73    +10
4    Lemon Thyme          3    60.0    4    4.35     8.5   72    72           72    +0
5    Cool Wind            2    53.0    5    5.05     0.0   -     75           75    +75
6    Girlwithagoldheart   3    57.0    6    7.45     8.5   -     66           66    +66
7    She's All Mine       3    57.0    7    8.55     8.5   -     66           66    +66
8    Reik Na Die Sterre   2    57.0    8    13.45    0.0   -     83           83    +83
9    She's A Trackstar    2    57.0    9    22.75    0.0   66    83           83    +17
99   Mrs Stormiatrix      2    57.0    99   0.00     0.0   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Act Of Grace Line 83 81 83 -2 0.0
2 Tipperary 73 64 74 -10 8.5 -
3 Takatalvi 63 64 73 -9 8.5 -
4 Lemon Thyme 72 62 72 -10 8.5 -
5 Cool Wind - 68 75 -7 0.0 -
6 Girlwithagoldheart - - 66 -66 8.5 -
7 She's All Mine - 79 66 +13 8.5 -
8 Reik Na Die Sterre - 52 83 -31 0.0 -
9 She's A Trackstar 66 59 83 -24 0.0 -
99 Mrs Stormiatrix - 81 83 -2 0.0 -
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