Official NHA Assessment

Race 5: #YOUCANBETONUS! MR 83 HANDICAP (Open)

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Line Horse
Pivotal Role
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 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    His Lordship         3    56.5    1    0.00     4.5   77    83           77    +0
2    Stoneywood           3    56.0    2    1.00     4.5   82    82           82    +0
3    Pivotal Role         3    55.5    3    1.50     4.5   81    81           81    +0
4    Caroline Island      2    60.0    4    3.00     3.0   89    93           93    +4
5    Rock Of Bismantova   3    59.0    5    3.50     4.5   81    88           88    +7
6    Fifty Ways           2    51.5    6    3.90     3.0   81    76           76    -5
7    Abound               4    57.0    7    4.30     5.0   78    83           83    +5
8    Saketini             2    56.5    8    6.70     3.0   83    86           86    +3
99   Kia Kaha             3    54.5    99   0.00     4.5   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 His Lordship 77 85 77 +8 4.5 -
2 Stoneywood 82 88 82 +6 4.5 -
3 Pivotal Role Line 81 87 81 +6 4.5
4 Caroline Island 89 88 93 -5 3.0 -
5 Rock Of Bismantova 81 80 88 -8 4.5 -
6 Fifty Ways 81 81 76 +5 3.0 -
7 Abound 78 77 83 -6 5.0 -
8 Saketini 83 83 86 -3 3.0 -
99 Kia Kaha - 71 79 -8 4.5 -
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