Official NHA Assessment

Race 3: 4RACING.TV MR 64 HANDICAP (Open)

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Line Horse
Magic Prince
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
3 / 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    Knockemstiff         2    59.5    1    0.00     6.5   63    63           63    +0
2    Magic Prince         2    62.0    2    1.00     6.5   68    68           68    +0
3    Cruzador             6    60.0    3    1.25     0.0   64    77           77    +13
4    Seattle Ripper       2    60.0    4    1.50     6.5   64    64           64    +0
5    Great Times          3    55.5    5    4.25     9.5   58    49           49    -9
6    Mr Bodacious         2    61.5    6    4.35     6.5   67    67           67    +0
99   Runningforthestars   5    52.0    99   0.00     0.0   -     61           61    +0
99   Mediteraneangoddes   4    55.5    99   0.00     11.0  -     46           46    +0
99   War Launch           2    54.5    99   0.00     6.5   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Knockemstiff 63 65 63 +2 6.5 -
2 Magic Prince Line 68 66 68 -2 6.5
3 Cruzador 64 61 77 -16 0.0 -
4 Seattle Ripper 64 59 64 -5 6.5 -
5 Great Times 58 54 49 +5 9.5 -
6 Mr Bodacious 67 65 67 -2 6.5 -
99 Runningforthestars - 45 61 -16 0.0 -
99 Mediteraneangoddes - 58 46 +12 11.0 -
99 War Launch - 50 53 -3 6.5 -
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