Official NHA Assessment

Race 3: www.tabgold.co.za MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Vermacilli
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
8 / 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    Vermacilli           3    56.0    1    0.00     8.0   67    67           67    +0
2    Purple Flower        3    60.0    2    0.10     8.0   -     75           75    +75
3    Foreign Lady         3    60.0    3    1.10     8.0   58    79           79    +21
4    Ocean Palace         3    57.0    4    1.80     8.0   -     72           72    +72
5    Samsai               3    60.0    5    4.40     8.0   56    75           75    +19
6    Secret Summer        2    57.0    6    6.60     0.0   -     85           85    +85
7    Belle Fontaine       3    60.0    7    7.40     8.0   -     75           75    +75
8    Satin In Seattle     3    60.0    8    8.20     8.0   -     75           75    +75
9    Rock My Heart        3    56.0    9    11.00    8.0   39    67           67    +28
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vermacilli Line 67 54 67 -13 8.0
2 Purple Flower - 74 75 -1 8.0 -
3 Foreign Lady 58 60 79 -19 8.0 -
4 Ocean Palace - 63 72 -9 8.0 -
5 Samsai 56 53 75 -22 8.0 -
6 Secret Summer - 52 85 -33 0.0 -
7 Belle Fontaine - 65 75 -10 8.0 -
8 Satin In Seattle - 45 75 -30 8.0 -
9 Rock My Heart 39 50 67 -17 8.0 -
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