Official NHA Assessment

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Line Horse
Brave Voyager
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
5 / 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    Majestic Power       3    55.5    1    0.00     4.5   60    56           60    +0
2    Brave Voyager        3    52.5    2    1.20     4.5   54    54           54    +0
3    Justfortheepenny     5    53.0    3    1.40     0.0   55    63           63    +8
4    Zakho                3    60.0    4    1.55     4.5   78    68           68    -10
5    Ravens Sword         3    59.0    5    2.65     4.5   67    65           65    -2
6    Corsican             2    57.0    6    2.85     0.0   72    70           70    -2
7    Afropolitan          6    60.0    7    5.55     0.0   69    74           74    +5
8    Lou Lou The Legend   3    54.5    8    6.95     4.5   66    54           56    -10
99   Flying Grace         4    60.0    99   0.00     2.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Majestic Power 60 63 60 +3 4.5 -
2 Brave Voyager Line 54 51 54 -3 4.5
3 Justfortheepenny 55 65 63 +2 0.0 -
4 Zakho 78 87 68 +19 4.5 -
5 Ravens Sword 67 53 65 -12 4.5 -
6 Corsican 72 61 70 -9 0.0 -
7 Afropolitan 69 84 74 +10 0.0 -
8 Lou Lou The Legend 66 59 56 +3 4.5 -
99 Flying Grace - 63 70 -7 2.0 -
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