Official NHA Assessment

Race 2: #YOUCANBETONUS! FM 74 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
City Of Dreams
Reference for assessment
Exact Matches
2 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 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    Genovefa             3    57.5    1    0.00     5.0   69    69           69    +0
2    Saigon Suzie         3    60.0    2    0.25     5.0   74    74           74    +0
3    North Star           2    61.5    3    0.30     3.5   84    80           80    -4
4    City Of Dreams       3    52.5    4    1.55     5.0   59    59           59    +0
5    Kamakazi             4    55.0    5    1.80     6.0   72    62           62    -10
6    Basingstoke          2    61.5    6    1.90     3.5   77    80           80    +3
7    Dupont Emerald       3    61.5    7    2.40     5.0   77    77           77    +0
8    Jet Set Run          2    57.0    8    3.15     3.5   75    71           71    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Genovefa 69 72 69 +3 5.0 -
2 Saigon Suzie 74 76 74 +2 5.0 -
3 North Star 84 85 80 +5 3.5 -
4 City Of Dreams Line 59 59 59 ✓ Match 5.0
5 Kamakazi 72 73 62 +11 6.0 -
6 Basingstoke 77 72 80 -8 3.5 -
7 Dupont Emerald 77 77 77 ✓ Match 5.0 -
8 Jet Set Run 75 80 71 +9 3.5 -
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