Official NHA Assessment

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

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Line Horse
Castletown
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 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    Aragosta             3    60.0    1    0.00     6.0   105   99           99    -6
2    Clafoutis            3    57.5    2    0.25     6.0   99    94           94    -5
3    Platinum Sky         3    60.0    3    2.25     6.0   94    102          102   +8
4    Castletown           3    60.0    4    5.85     6.0   99    99           99    +0
5    Noble Striker        3    60.0    5    7.25     6.0   97    99           99    +2
6    Little Prince        3    60.0    6    13.50    6.0   90    99           99    +9
7    Moya Wa Laliga       3    60.0    7    15.00    6.0   81    99           99    +18
8    Shining Armour       3    57.5    8    28.75    6.0   85    94           94    +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aragosta 105 109 99 +10 6.0 -
2 Clafoutis 99 96 94 +2 6.0 -
3 Platinum Sky 94 99 102 -3 6.0 -
4 Castletown Line 99 90 99 -9 6.0
5 Noble Striker 97 98 99 -1 6.0 -
6 Little Prince 90 73 99 -26 6.0 -
7 Moya Wa Laliga 81 81 99 -18 6.0 -
8 Shining Armour 85 67 94 -27 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