Official NHA Assessment

Race 2: RACING TODAY GRADUATION PLATE (For Maidens, 1 & 2 Time Winners)

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Line Horse
Kaalvoet
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 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    The Last Duke        2    60.0    1    0.00     3.5   96    103          102   +6
2    Zalatoris            2    60.0    2    0.30     3.5   105   103          103   -2
3    Believe In Fate      2    56.5    3    0.80     3.5   85    96           96    +11
4    Kaalvoet             2    56.0    4    1.20     3.5   95    95           95    +0
5    Chapbook             2    58.5    5    6.30     3.5   100   100          100   +0
99   Umzingeli Wenyathi   2    60.0    99   0.00     3.5   -     103          103   +0
99   Mariachi Madness     2    58.0    99   0.00     3.5   -     99           99    +0
99   Antonio Gaudi        2    56.0    99   0.00     3.5   -     95           95    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Last Duke 96 102 102 ✓ Match 3.5 -
2 Zalatoris 105 108 103 +5 3.5 -
3 Believe In Fate 85 85 96 -11 3.5 -
4 Kaalvoet Line 95 93 95 -2 3.5
5 Chapbook 100 106 100 +6 3.5 -
99 Umzingeli Wenyathi - 90 103 -13 3.5 -
99 Mariachi Madness - 57 99 -42 3.5 -
99 Antonio Gaudi - 82 95 -13 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