Official NHA Assessment

Race 7: SEA COTTAGE STAKES (Grade 3) (3 year olds)

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Line Horse
Bonete
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Billy Bowlegs        5    60.0    1    0.00     0.0   100   113          106   +6
2    None Other           5    57.5    2    0.50     0.0   101   113          113   +12
3    Bonete               3    57.5    3    3.75     6.0   97    97           97    +0
4    African Torrent      2    60.0    4    7.50     0.0   85    113          113   +28
5    King Of Rome         2    60.0    5    7.55     0.0   77    113          113   +36
6    Otto Luyken          5    60.0    6    8.00     0.0   89    113          113   +24
7    Pragmatist           5    60.0    7    10.00    0.0   88    113          113   +25
8    American Star        3    60.0    8    10.50    6.0   81    101          101   +20
9    Libeccio             5    60.0    9    16.00    0.0   77    113          113   +36
10   Ryan's Dream         3    60.0    10   34.00    6.0   81    101          101   +20
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Billy Bowlegs 100 104 106 -2 0.0 -
2 None Other 101 115 113 +2 0.0 -
3 Bonete Line 97 85 97 -12 6.0
4 African Torrent 85 68 113 -45 0.0 -
5 King Of Rome 77 83 113 -30 0.0 -
6 Otto Luyken 89 116 113 +3 0.0 -
7 Pragmatist 88 81 113 -32 0.0 -
8 American Star 81 83 101 -18 6.0 -
9 Libeccio 77 62 113 -51 0.0 -
10 Ryan's Dream 81 65 101 -36 6.0 -
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