Official NHA Assessment

Race 8: DR ASHLEY PARKER MR 80 HANDICAP (Open)

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Line Horse
Eiffel Tower
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
4 / 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    Willow Express       7    60.0    1    0.00     0.0   80    93           80    +0
2    Dj Junior            3    57.5    2    0.75     8.5   75    75           75    +0
3    Eiffel Tower         4    61.5    3    4.50     6.0   84    84           84    +0
4    Spring Tradition     3    56.0    4    5.75     8.5   89    68           79    -10
5    Force De Dieu        3    57.5    5    9.00     8.5   76    71           71    -5
6    Clarkson             4    55.5    6    12.25    6.0   76    72           72    -4
7    Sail The Sky         4    52.5    7    15.50    6.0   64    66           66    +2
8    House Of Romanov     2    61.5    8    19.50    0.0   84    96           96    +12
99   Care Taker           4    56.0    99   0.00     6.0   -     73           73    +0
99   Bacchus              3    55.5    99   0.00     8.5   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Willow Express 80 82 80 +2 0.0 -
2 Dj Junior 75 79 75 +4 8.5 -
3 Eiffel Tower Line 84 69 84 -15 6.0
4 Spring Tradition 89 81 79 +2 8.5 -
5 Force De Dieu 76 64 71 -7 8.5 -
6 Clarkson 76 75 72 +3 6.0 -
7 Sail The Sky 64 62 66 -4 6.0 -
8 House Of Romanov 84 81 96 -15 0.0 -
99 Care Taker - 76 73 +3 6.0 -
99 Bacchus - 101 67 +34 8.5 -
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