Official NHA Assessment

Race 2: OPEN A TABGOLD ACCOUNT - 031 314 1874 CLASS 5 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 66)

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Line Horse
Perfect Trust
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
4 / 7
Within 2 points
Significant Diffs
2 / 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    Aspoestertjie        5    60.0    1    0.00     0.0   69    66           66    -3
2    Perfect Trust        7    53.0    2    0.25     0.0   52    52           52    +0
3    Princess Palace      3    60.5    3    1.55     4.0   76    62           66    -10
4    The Queen Bee        4    58.5    4    3.65     2.5   63    59           59    -4
5    Fate Decreed         3    60.5    5    4.70     4.0   67    59           59    -8
6    Spirited Flight      5    58.0    6    5.00     0.0   62    62           62    +0
7    Purple Flower        3    61.5    7    8.80     4.0   69    61           61    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aspoestertjie 69 68 66 +2 0.0 -
2 Perfect Trust Line 52 50 52 -2 0.0
3 Princess Palace 76 68 66 +2 4.0 -
4 The Queen Bee 63 53 59 -6 2.5 -
5 Fate Decreed 67 54 59 -5 4.0 -
6 Spirited Flight 62 61 62 -1 0.0 -
7 Purple Flower 69 74 61 +13 4.0 -
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