Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
7 / 11
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    Lead The Charge      2    57.0    1    0.00     1.0   -     -            -     +0
2    Watchman             2    57.0    2    0.20     1.0   -     -            -     +0
3    Pibe De Oro          3    57.0    3    1.20     2.0   -     -            -     +0
4    Busstopinhounslow    3    57.0    4    2.60     2.0   -     -            -     +0
5    Ethensbeaut          2    50.5    5    6.50     1.0   -     -            -     +0
6    Ringho               4    60.0    6    11.30    2.5   44    -            39    -5
7    Spy Story            3    57.0    7    99.99    2.0   -     -            -     +0
99   King Harry           4    60.0    99   0.00     2.5   -     -            -     +0
99   Bakwena              3    54.5    99   0.00     2.0   -     -            -     +0
99   Tiger Storm          3    57.0    99   0.00     2.0   -     -            -     +0
99   Karate Kid           3    57.0    99   0.00     2.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lead The Charge - 89 - +89 1.0 -
2 Watchman - 88 - +88 1.0 -
3 Pibe De Oro - 66 - +66 2.0 -
4 Busstopinhounslow - 110 - +110 2.0 -
5 Ethensbeaut - 67 - +67 1.0 -
6 Ringho 44 60 39 +21 2.5 -
7 Spy Story - 66 - +66 2.0 -
99 King Harry - 55 - - 2.5 -
99 Bakwena - 97 - - 2.0 -
99 Tiger Storm - 69 - - 2.0 -
99 Karate Kid - 103 - - 2.0 -
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