Official NHA Assessment

Race 2: OPEN A TABGOLD ACCOUNT - 031 314 1874 MAIDEN PLATE (For all Maidens)

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Line Horse
Who Blinked
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    Slytherin            3    59.0    1    0.00     7.5   -     -            -     +0
2    Who Blinked          3    59.0    2    0.50     7.5   -     -            -     +0
3    The Golden Goal      4    58.5    3    1.30     9.0   65    -4           55    -10
4    Kola Tonic           2    59.0    4    1.50     5.0   78    5            68    -10
5    Higher Love          2    59.0    5    2.25     5.0   66    5            56    -10
6    Good Living          3    59.0    6    2.85     7.5   78    -            73    -5
7    Master Of Mystery    3    59.0    7    4.35     7.5   -     -            -     +0
8    Grand Force          3    59.0    8    5.75     7.5   68    -            61    -7
9    Vila Vicosa          3    59.0    9    11.25    7.5   -     -            -     +0
99   Global Drumbeat      3    59.0    99   0.00     7.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Slytherin - 70 - +70 7.5 -
2 Who Blinked Line - 82 - +82 7.5
3 The Golden Goal 65 55 55 ✓ Match 9.0 -
4 Kola Tonic 78 78 68 +10 5.0 -
5 Higher Love 66 68 56 +12 5.0 -
6 Good Living 78 79 73 +6 7.5 -
7 Master Of Mystery - 75 - +75 7.5 -
8 Grand Force 68 54 61 -7 7.5 -
9 Vila Vicosa - 74 - +74 7.5 -
99 Global Drumbeat - 65 - - 7.5 -
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