Official NHA Assessment

Race 7: TAB 4RACING APP FM 99 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
World Of Alice
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
6 / 7
Within 2 points
Significant Diffs
1 / 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    Komati River         3    54.5    1    0.00     3.0   93    88           93    +0
2    World Of Alice       3    62.5    2    3.50     3.0   104   104          104   +0
3    Roaming Spirit       3    54.0    3    8.00     3.0   87    87           87    +0
4    Green Flash          4    56.0    4    11.00    3.5   91    90           90    -1
5    Blizzard Snow        3    53.5    5    12.30    3.0   86    86           86    +0
6    Calantha             4    58.0    6    13.30    3.5   95    94           94    -1
99   Rachel Wall          2    61.0    99   0.00     2.0   -     103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Komati River 93 101 93 +8 3.0 -
2 World Of Alice Line 104 104 104 ✓ Match 3.0
3 Roaming Spirit 87 86 87 -1 3.0 -
4 Green Flash 91 91 90 +1 3.5 -
5 Blizzard Snow 86 85 86 -1 3.0 -
6 Calantha 95 95 94 +1 3.5 -
99 Rachel Wall - 105 103 +2 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