Official NHA Assessment

Race 3: TAB 4RACING APP MAIDEN PLATE (For Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Joe Harman
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
5 / 9
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    Launch Code          2    57.0    1    0.00     0.0   69    -            69    +0
2    Joe Harman           4    87.0    2    3.25     5.0   53    53           53    +0
3    Secret Summer        2    53.5    3    3.75     0.0   62    -5           52    -10
4    Fearless Badger      4    57.0    4    4.00     5.0   50    -8           40    -10
5    Sunlit From Heaven   3    57.0    5    4.10     9.0   62    -16          52    -10
6    Belle's First Wave   3    60.0    6    4.35     9.0   46    -11          36    -10
7    Chalcos              2    57.0    7    5.60     0.0   58    -            52    -6
8    Klip In Die Bos      2    57.0    8    99.99    0.0   25    -            18    -7
99   Wolfram              3    60.0    99   0.00     9.0   -     -12          -12   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Launch Code 69 70 69 +1 0.0 -
2 Joe Harman Line 53 54 53 +1 5.0
3 Secret Summer 62 52 52 ✓ Match 0.0 -
4 Fearless Badger 50 58 40 +18 5.0 -
5 Sunlit From Heaven 62 54 52 +2 9.0 -
6 Belle's First Wave 46 51 36 +15 9.0 -
7 Chalcos 58 60 52 +8 0.0 -
8 Klip In Die Bos 25 25 18 +7 0.0 -
99 Wolfram - 59 -12 +71 9.0 -
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