Official NHA Assessment

Race 7: OPEN A TABGOLD ACCOUNT - 031 314 1874 CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 80)

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Line Horse
Alphabetty
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
6 / 11
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    Faizah               5    55.5    1    0.00     0.0   79    66           66    -13
2    Skytrix              3    57.5    2    0.40     2.5   75    70           70    -5
3    Alphabetty           5    55.5    3    0.50     0.0   71    71           71    +0
4    Greenlitealltheway   2    56.0    4    0.90     0.0   78    71           71    -7
5    Grand Occasion       2    54.0    5    1.95     0.0   77    66           67    -10
6    Flying Hafla         2    56.5    6    3.15     0.0   79    70           70    -9
7    Got The Fever        2    51.5    7    3.40     0.0   77    59           67    -10
8    Fireburst            3    54.5    8    3.80     2.5   75    60           65    -10
9    Izibulo              2    56.5    9    6.10     0.0   79    68           69    -10
10   Zena Rose            3    55.0    10   8.80     2.5   76    60           66    -10
11   Icy Lancaster        3    60.0    11   19.30    2.5   86    70           76    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Faizah 79 85 66 +19 0.0 -
2 Skytrix 75 71 70 +1 2.5 -
3 Alphabetty Line 71 71 71 ✓ Match 0.0
4 Greenlitealltheway 78 96 71 +25 0.0 -
5 Grand Occasion 77 85 67 +18 0.0 -
6 Flying Hafla 79 73 70 +3 0.0 -
7 Got The Fever 77 70 67 +3 0.0 -
8 Fireburst 75 80 65 +15 2.5 -
9 Izibulo 79 76 69 +7 0.0 -
10 Zena Rose 76 73 66 +7 2.5 -
11 Icy Lancaster 86 76 76 ✓ Match 2.5 -
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