Official NHA Assessment

Race 2: BETWAY TOTE REWARDS CLUB NOVICE PLATE (Maidens & 1 time Winners)

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Line Horse
Eyjafjallajokull
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
5 / 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    Acorn                2    59.5    1    0.00     0.0   89    76           76    -13
2    Eyjafjallajokull     2    60.0    2    0.25     0.0   77    77           77    +0
3    Empire Blue          4    57.0    3    1.00     5.0   78    65           68    -10
4    Lord Nelson          3    59.5    4    5.50     8.0   70    60           60    -10
5    Woodland Ridge       2    60.0    5    5.75     0.0   68    77           77    +9
6    Last Storm           2    59.0    6    6.25     0.0   71    75           75    +4
99   Green Falcon         2    59.0    99   0.00     0.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Acorn 89 89 76 +13 0.0 -
2 Eyjafjallajokull Line 77 86 77 +9 0.0
3 Empire Blue 78 71 68 +3 5.0 -
4 Lord Nelson 70 55 60 -5 8.0 -
5 Woodland Ridge 68 69 77 -8 0.0 -
6 Last Storm 71 66 75 -9 0.0 -
99 Green Falcon - 62 75 -13 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