Official NHA Assessment

Race 1: 4RACING WELCOMES YOU GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

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Line Horse
African Pride
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 7
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    Chapbook             2    55.5    1    0.00     3.5   95    95           95    +0
2    African Pride        2    60.0    2    0.75     3.5   104   104          104   +0
3    Winds Of Change      3    60.0    3    1.00     5.0   114   101          104   -10
4    I'm A Fireball       2    57.0    4    3.40     3.5   102   98           98    -4
5    Kaalvoet             2    57.0    5    4.80     3.5   97    98           98    +1
6    Trajanus             2    60.0    6    6.20     3.5   96    104          104   +8
99   Clever Trevor        2    58.5    99   0.00     3.5   -     101          101   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chapbook 95 106 95 +11 3.5 -
2 African Pride Line 104 103 104 -1 3.5
3 Winds Of Change 114 102 104 -2 5.0 -
4 I'm A Fireball 102 108 98 +10 3.5 -
5 Kaalvoet 97 93 98 -5 3.5 -
6 Trajanus 96 96 104 -8 3.5 -
99 Clever Trevor - 89 101 -12 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