Official NHA Assessment

Race 9: THE INDEPENDENT ON SATURDAY ARTS & PLEASURE FM 84 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Maquette
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
5 / 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    Our Emily            3    54.0    1    0.00     2.5   75    72           75    +0
2    Ancient Epic         3    60.5    2    0.25     2.5   85    85           85    +0
3    Maquette             3    54.5    3    1.65     2.5   73    73           73    +0
4    Sweet Symphony       3    58.0    4    1.90     2.5   80    80           80    +0
5    Certainly            2    59.0    5    3.60     1.5   85    84           84    -1
6    Sting Ray            3    56.0    6    4.00     2.5   76    76           76    +0
7    Bonne Bouche         2    58.0    7    4.15     1.5   83    82           82    -1
8    Princess Santo       4    52.5    8    7.75     0.0   51    74           74    +23
9    Princess Tea         3    56.5    9    7.95     2.5   77    77           77    +0
99   Isn't She Bonny      2    54.5    99   0.00     1.5   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Our Emily 75 87 75 +12 2.5 -
2 Ancient Epic 85 88 85 +3 2.5 -
3 Maquette Line 73 91 73 +18 2.5
4 Sweet Symphony 80 86 80 +6 2.5 -
5 Certainly 85 80 84 -4 1.5 -
6 Sting Ray 76 73 76 -3 2.5 -
7 Bonne Bouche 83 67 82 -15 1.5 -
8 Princess Santo 51 50 74 -24 0.0 -
9 Princess Tea 77 77 77 ✓ Match 2.5 -
99 Isn't She Bonny - 71 75 -4 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