Official NHA Assessment

Race 4: PLAY SOCCER 6, 10 AND 13 MAIDEN PLATE (For all Maidens)

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Line Horse
Pompeii Shield
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
4 / 9
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    Top Floor            2    60.0    1    0.00     0.0   -     72           6     +6
2    Pompeii Shield       4    60.0    2    5.00     1.5   69    69           69    +0
3    Rock My Boat         3    60.0    3    12.00    3.0   69    66           66    -3
4    Willow Charm         2    60.0    4    17.25    0.0   74    72           72    -2
5    Kings Head           4    60.0    5    25.75    1.5   -     69           69    +69
6    Alhakim              2    60.0    6    99.99    0.0   -     72           72    +72
99   Flying Predator      3    60.0    99   0.00     3.0   -     66           66    +0
99   Smuggler             3    60.0    99   0.00     3.0   -     66           66    +0
99   Indian Spice         3    60.0    99   0.00     3.0   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Top Floor - 85 6 +79 0.0 -
2 Pompeii Shield Line 69 69 69 ✓ Match 1.5
3 Rock My Boat 69 66 66 ✓ Match 3.0 -
4 Willow Charm 74 70 72 -2 0.0 -
5 Kings Head - - 69 -69 1.5 -
6 Alhakim - 58 72 -14 0.0 -
99 Flying Predator - 10 66 -56 3.0 -
99 Smuggler - 68 66 +2 3.0 -
99 Indian Spice - 70 66 +4 3.0 -
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