Official NHA Assessment

Race 6: ZIMBABWE DERBY (GRADE 3) (For 3-year-olds/ 3rd Leg Triple Crown)

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Line Horse
Shes Everything
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
0 / 4
Within 2 points
Significant Diffs
4 / 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    River Power          3    58.0    1    0.00     4.5   84    83           83    -1
2    Shes Everything      3    55.5    2    7.00     4.5   78    78           78    +0
3    Magic Exists         3    58.0    3    13.00    4.5   69    83           83    +14
4    Solartrip            3    58.0    4    18.00    4.5   63    83           83    +20
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 River Power 84 97 83 +14 4.5 -
2 Shes Everything Line 78 71 78 -7 4.5
3 Magic Exists 69 91 83 +8 4.5 -
4 Solartrip 63 77 83 -6 4.5 -
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