Official NHA Assessment

Race 6: RACING240 NOVICE HANDICAP (Maidens & 1 time winners)

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Line Horse
Dupont Emerald
Reference for assessment
Exact Matches
3 / 11
Calculated = Official
Close Matches
6 / 11
Within 2 points
Significant Diffs
1 / 11
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    One Dance            3    58.0    1    0.00     3.5   77    77           77    +0
2    Lotus Silk           3    59.0    2    0.50     3.5   84    79           79    -5
3    Dupont Emerald       3    58.0    3    2.75     3.5   77    77           77    +0
4    Overture             3    57.5    4    3.50     3.5   81    76           76    -5
5    Chief Runner         3    50.5    5    3.55     3.5   59    62           62    +3
6    Originator           4    53.5    6    4.30     4.0   67    67           67    +0
7    Tower Of London      2    53.0    7    4.80     2.5   72    69           69    -3
8    Mio Destino          2    53.5    8    8.30     2.5   73    70           70    -3
9    Brooksider           3    49.5    9    9.05     3.5   58    60           60    +2
10   American Matador     3    55.0    10   11.05    3.5   71    71           71    +0
11   Key News             2    60.0    11   11.55    2.5   81    83           83    +2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 One Dance 77 82 77 +5 3.5 -
2 Lotus Silk 84 87 79 +8 3.5 -
3 Dupont Emerald Line 77 77 77 ✓ Match 3.5
4 Overture 81 81 76 +5 3.5 -
5 Chief Runner 59 59 62 -3 3.5 -
6 Originator 67 67 67 ✓ Match 4.0 -
7 Tower Of London 72 70 69 +1 2.5 -
8 Mio Destino 73 69 70 -1 2.5 -
9 Brooksider 58 55 60 -5 3.5 -
10 American Matador 71 71 71 ✓ Match 3.5 -
11 Key News 81 81 83 -2 2.5 -
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