Official NHA Assessment

Race 6: TAB TELEBET 0861 000 822 MR 82 HANDICAP (Open)

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Line Horse
Eyjafjallajokull
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
6 / 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    Masked Vigilante     3    58.0    1    0.00     8.0   78    62           78    +0
2    Eyjafjallajokull     2    58.0    2    0.25     0.0   78    78           78    +0
3    Purple Operator      3    56.0    3    0.35     8.0   74    63           64    -10
4    Cool Winter          2    60.5    4    0.60     0.0   83    88           88    +5
5    Strange Magic        5    61.0    5    0.85     0.0   84    88           88    +4
6    Lily Of The Nile     2    59.0    6    1.10     0.0   81    84           84    +3
7    Igugulethu           2    56.0    7    1.35     0.0   75    77           77    +2
99   El Romiachi          8    57.5    99   0.00     0.0   -     77           77    +0
99   Grey Smoke           2    58.0    99   0.00     0.0   -     78           78    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Masked Vigilante 78 78 78 ✓ Match 8.0 -
2 Eyjafjallajokull Line 78 86 78 +8 0.0
3 Purple Operator 74 74 64 +10 8.0 -
4 Cool Winter 83 78 88 -10 0.0 -
5 Strange Magic 84 69 88 -19 0.0 -
6 Lily Of The Nile 81 67 84 -17 0.0 -
7 Igugulethu 75 83 77 +6 0.0 -
99 El Romiachi - 77 77 ✓ Match 0.0 -
99 Grey Smoke - 77 78 -1 0.0 -
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