Official NHA Assessment

Race 6: STORM BIRD STAKES (Listed) (For 2 yo R100 000 Win BSA Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 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    American Graffiti    2    57.5    1    0.00     3.0   -     -            -     +0
2    Fire 'N Flames       4    60.0    2    0.50     5.0   -     -            -     +0
3    Qhawe Lami           4    57.0    3    1.00     5.0   -     -            -     +0
4    Zinovi               2    57.0    4    1.50     3.0   -     -            -     +0
5    Predator's Feast     2    57.5    5    3.00     3.0   -     -            -     +0
6    Zoombomber           2    57.0    6    3.75     3.0   -     -            -     +0
99   Linkin Navigator     2    57.0    99   0.00     3.0   -     -            -     +0
99   Troppo Veloce        2    57.5    99   0.00     3.0   -     -            -     +0
99   Purple Pitcher       4    57.0    99   0.00     5.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 American Graffiti - 90 - +90 3.0 -
2 Fire 'N Flames - 103 - +103 5.0 -
3 Qhawe Lami - 80 - +80 5.0 -
4 Zinovi - 120 - +120 3.0 -
5 Predator's Feast - 62 - +62 3.0 -
6 Zoombomber - 60 - +60 3.0 -
99 Linkin Navigator - 77 - - 3.0 -
99 Troppo Veloce - 104 - - 3.0 -
99 Purple Pitcher - 121 - - 5.0 -
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