Official NHA Assessment

Race 1: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

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Line Horse
Charming Cheetah
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
2 / 4
Within 2 points
Significant Diffs
2 / 4
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    Zalatoris            2    60.0    1    0.00     2.5   102   107          107   +5
2    Charming Cheetah     2    60.0    2    1.00     2.5   107   107          107   +0
3    Victory In Orleans   2    54.0    3    5.30     2.5   84    95           95    +11
4    Trajanus             2    60.0    4    21.50    2.5   96    107          107   +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Zalatoris 102 108 107 +1 2.5 -
2 Charming Cheetah Line 107 106 107 -1 2.5
3 Victory In Orleans 84 84 95 -11 2.5 -
4 Trajanus 96 96 107 -11 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