Official NHA Assessment

Race 4: IN THE BOX SEAT PODCAST FM 82 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Nettleton
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
7 / 12
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    Kennedy              3    56.5    1    0.00     3.0   75    75           75    +0
2    Vision To Achieve    4    57.0    2    0.30     3.5   80    75           75    -5
3    Maquette             3    62.0    3    0.55     3.0   89    86           86    -3
4    Nettleton            3    58.5    4    1.65     3.0   79    79           79    +0
5    War Empress          5    59.5    5    2.05     0.0   81    87           87    +6
6    There She Goes       6    58.0    6    3.15     0.0   86    84           84    -2
7    Jane's Vision        2    56.0    7    3.40     2.0   78    76           76    -2
8    Rapid Fire           4    57.5    8    3.90     3.5   77    76           76    -1
9    Isn't She Bonny      2    57.5    9    4.90     2.0   80    79           79    -1
10   Vathomvlaffie        2    55.0    10   5.20     2.0   76    74           74    -2
11   Cue The Rebel        2    53.0    11   9.00     2.0   72    70           70    -2
12   Witchwood            2    56.5    12   19.80    2.0   79    77           77    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kennedy 75 79 75 +4 3.0 -
2 Vision To Achieve 80 87 75 +12 3.5 -
3 Maquette 89 91 86 +5 3.0 -
4 Nettleton Line 79 100 79 +21 3.0
5 War Empress 81 92 87 +5 0.0 -
6 There She Goes 86 77 84 -7 0.0 -
7 Jane's Vision 78 65 76 -11 2.0 -
8 Rapid Fire 77 72 76 -4 3.5 -
9 Isn't She Bonny 80 71 79 -8 2.0 -
10 Vathomvlaffie 76 56 74 -18 2.0 -
11 Cue The Rebel 72 62 70 -8 2.0 -
12 Witchwood 79 78 77 +1 2.0 -
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