Official NHA Assessment

Race 3: #YOUCANBETONUS! FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Articuno
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
5 / 8
Within 2 points
Significant Diffs
2 / 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    Sweetie Darling      2    62.0    1    0.00     1.0   86    84           86    +0
2    Articuno             2    61.0    2    0.25     1.0   82    82           82    +0
3    Isn't She Bonny      2    56.0    3    1.50     1.0   72    72           72    +0
4    Indebe Mayibuye      3    60.0    4    1.75     2.0   82    78           78    -4
5    Project Runway       3    59.5    5    2.25     2.0   81    77           77    -4
6    Miss Shaivi          4    55.5    6    4.00     2.5   71    68           68    -3
7    Havana Grey          3    57.5    7    4.50     2.0   77    73           73    -4
8    Basingstoke          2    62.0    8    6.25     1.0   86    84           84    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sweetie Darling 86 100 86 +14 1.0 -
2 Articuno Line 82 80 82 -2 1.0
3 Isn't She Bonny 72 71 72 -1 1.0 -
4 Indebe Mayibuye 82 79 78 +1 2.0 -
5 Project Runway 81 79 77 +2 2.0 -
6 Miss Shaivi 71 68 68 ✓ Match 2.5 -
7 Havana Grey 77 68 73 -5 2.0 -
8 Basingstoke 86 72 84 -12 1.0 -
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