Official NHA Assessment

Race 2: TAB STORM BIRD STAKES (Listed) (For 2 yo R100 000 Win BSA / CRS Bonus)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
6 / 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    Charming Cheetah     2    57.0    1    0.00     2.5   -     -            -     +0
2    One Fine Winter      2    54.5    2    0.30     2.5   -     -            -     +0
3    Reigning Alice       2    54.5    3    0.80     2.5   -     -            -     +0
4    Constellation        2    57.0    4    0.85     2.5   -     -            -     +0
5    Tina Lovelace        2    54.5    5    1.85     2.5   -     -            -     +0
6    Read All About It    2    60.0    6    3.60     2.5   -     -            -     +0
7    Bingo                2    57.0    7    5.10     2.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Charming Cheetah - 106 - +106 2.5 -
2 One Fine Winter - 105 - +105 2.5 -
3 Reigning Alice - - - ✓ Match 2.5 -
4 Constellation - 114 - +114 2.5 -
5 Tina Lovelace - 95 - +95 2.5 -
6 Read All About It - 99 - +99 2.5 -
7 Bingo - 81 - +81 2.5 -
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