Official NHA Assessment

Race 2: WSB.CO.ZA FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Jane's Vision
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 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    War Empress          5    60.5    1    0.00     0.0   81    94           81    +0
2    Happy Analia         4    56.5    2    1.40     9.0   73    68           68    -5
3    Jane's Vision        2    53.5    3    3.20     5.0   70    70           70    +0
4    Grey Fantacy         3    57.0    4    3.60     7.5   84    72           74    -10
5    Sweet Julia          2    55.5    5    5.00     5.0   71    74           74    +3
6    Emerald Green        4    56.0    6    5.40     9.0   72    67           67    -5
99   Arverni Princess     2    52.0    99   0.00     5.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 War Empress 81 92 81 +11 0.0 -
2 Happy Analia 73 78 68 +10 9.0 -
3 Jane's Vision Line 70 65 70 -5 5.0
4 Grey Fantacy 84 83 74 +9 7.5 -
5 Sweet Julia 71 73 74 -1 5.0 -
6 Emerald Green 72 75 67 +8 9.0 -
99 Arverni Princess - 67 67 ✓ Match 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