Official NHA Assessment

Race 6: RACING TODAY MR 86 HANDICAP (Open)

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Line Horse
Copper Plate
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 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    Damova               3    55.5    1    0.00     5.0   80    78           80    +0
2    One More Star        3    58.5    2    1.60     5.0   84    89           89    +5
3    Copper Plate         3    54.0    3    5.80     5.0   75    75           75    +0
4    Jordan               4    61.0    4    6.80     2.0   88    95           95    +7
5    Diesel's Shadow      4    57.5    5    6.90     2.0   81    88           88    +7
6    Poplar Park          3    58.0    6    10.10    5.0   88    83           83    -5
7    Vesuvio              5    59.5    7    15.50    0.0   85    96           96    +11
99   Cartagena            4    55.5    99   0.00     2.0   -     84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Damova 80 85 80 +5 5.0 -
2 One More Star 84 87 89 -2 5.0 -
3 Copper Plate Line 75 75 75 ✓ Match 5.0
4 Jordan 88 88 95 -7 2.0 -
5 Diesel's Shadow 81 80 88 -8 2.0 -
6 Poplar Park 88 87 83 +4 5.0 -
7 Vesuvio 85 85 96 -11 0.0 -
99 Cartagena - 77 84 -7 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