Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
United's Ransom
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 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    Primrose Path        2    60.0    1    0.00     0.0   63    60           60    -3
2    Shampimpi            4    56.0    2    2.75     0.5   -     53           53    +53
3    Green Bubbles        2    60.0    3    4.00     0.0   72    61           62    -10
4    United's Ransom      3    60.0    4    5.20     0.5   59    59           59    +0
5    Ideal Heart          3    60.0    5    5.25     0.5   54    59           59    +5
6    Love Song            2    56.0    6    15.25    0.0   -     52           52    +52
99   Butternutenrooiwyn   2    56.0    99   0.00     0.0   -     52           52    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Primrose Path 63 77 60 +17 0.0 -
2 Shampimpi - 70 53 +17 0.5 -
3 Green Bubbles 72 66 62 +4 0.0 -
4 United's Ransom Line 59 59 59 ✓ Match 0.5
5 Ideal Heart 54 54 59 -5 0.5 -
6 Love Song - 59 52 +7 0.0 -
99 Butternutenrooiwyn - 60 52 +8 0.0 -
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