Official NHA Assessment

Race 6: HIGHVELD WINTER JUVENILE STAKES (For 2 year olds (Non-Black Type))

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
10 / 12
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    Main Defender        4    58.0    1    0.00     0.5   -     -            -     +0
2    Fire 'N Flames       4    60.0    2    3.25     0.5   -     -            -     +0
3    Pure Predator        2    60.0    3    4.50     0.0   -     -            -     +0
4    Purple Pitcher       4    56.0    4    6.50     0.5   -     -            -     +0
5    Longsword            2    56.0    5    6.75     0.0   -     -            -     +0
6    Max The Magician     4    60.0    6    8.00     0.5   -     -            -     +0
7    Real Relief          2    58.0    7    8.50     0.0   -     -            -     +0
8    Just Var             4    58.0    8    9.50     0.5   -     -            -     +0
9    French Impact        2    58.0    9    10.75    0.0   -     -            -     +0
10   Prince Of Kildare    4    56.0    10   19.25    0.5   -     -            -     +0
99   Linkin Navigator     2    58.0    99   0.00     0.0   -     -            -     +0
99   Bom Bom              4    58.0    99   0.00     0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Main Defender - 130 - +130 0.5 -
2 Fire 'N Flames - 103 - +103 0.5 -
3 Pure Predator - 118 - +118 0.0 -
4 Purple Pitcher - 121 - +121 0.5 -
5 Longsword - 72 - +72 0.0 -
6 Max The Magician - 95 - +95 0.5 -
7 Real Relief - 75 - +75 0.0 -
8 Just Var - 83 - +83 0.5 -
9 French Impact - 72 - +72 0.0 -
10 Prince Of Kildare - 80 - +80 0.5 -
99 Linkin Navigator - 77 - - 0.0 -
99 Bom Bom - 64 - - 0.5 -
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