Official NHA Assessment

Race 1: www.tabgold.co.za MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Sweet Julia
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    Vathomvlaffie        2    58.5    1    0.00     2.5   64    69           69    +5
2    Sweet Julia          2    60.0    2    2.40     2.5   72    72           72    +0
3    Emerald Green        4    60.0    3    2.80     4.0   69    69           69    +0
4    Head Girl            5    60.0    4    4.00     0.0   64    77           77    +13
4    Fire Phoenix         2    60.0    4    4.00     2.5   56    72           72    +16
6    Tothestarsandback    2    60.0    6    6.20     2.5   63    72           72    +9
7    Angel Wings          3    60.0    7    8.30     3.5   58    70           70    +12
8    Together Again       5    60.0    8    8.70     0.0   59    77           77    +18
9    Willow Brook         3    60.0    9    13.00    3.5   -     70           70    +70
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vathomvlaffie 64 56 69 -13 2.5 -
2 Sweet Julia Line 72 73 72 +1 2.5
3 Emerald Green 69 75 69 +6 4.0 -
4 Head Girl 64 62 77 -15 0.0 -
4 Fire Phoenix 56 59 72 -13 2.5 -
6 Tothestarsandback 63 52 72 -20 2.5 -
7 Angel Wings 58 54 70 -16 3.5 -
8 Together Again 59 55 77 -22 0.0 -
9 Willow Brook - - 70 -70 3.5 -
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