Official NHA Assessment

Race 5: www.galloptv.co.za MR 70 HANDICAP (Open)

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Line Horse
Purple Operator
Reference for assessment
Exact Matches
2 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
3 / 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    Esquevelle           3    59.5    1    0.00     9.5   69    69           69    +0
2    Purple Operator      3    59.5    2    1.30     9.5   69    69           69    +0
3    Bristolbeaufighter   3    59.0    3    3.10     9.5   68    68           68    +0
4    Who's That Star      3    59.0    4    3.40     9.5   68    68           68    +0
5    General Hancock      3    60.0    5    5.30     9.5   70    70           70    +0
6    Edward Longshanks    3    56.0    6    6.10     9.5   62    62           62    +0
99   Higher Purpose       4    53.0    99   0.00     11.0  -     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 Esquevelle 69 86 69 +17 9.5 -
2 Purple Operator Line 69 74 69 +5 9.5
3 Bristolbeaufighter 68 64 68 -4 9.5 -
4 Who's That Star 68 68 68 ✓ Match 9.5 -
5 General Hancock 70 61 70 -9 9.5 -
6 Edward Longshanks 62 62 62 ✓ Match 9.5 -
99 Higher Purpose - 61 53 +8 11.0 -
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