Official NHA Assessment

Race 9: ARTHUR HAVERGAL, JACOB KALT, MICHAEL COETZEE MR 90 HANDICAP (Open)

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Line Horse
Silver Tudor
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
7 / 12
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    Halberdier           4    52.0    1    0.00     3.5   77    67           77    +0
2    Longsword            2    52.5    2    0.05     2.0   79    71           71    -8
3    Silver Tudor         5    60.5    3    2.50     0.0   91    91           91    +0
4    Max The Otter        2    52.0    4    2.80     2.0   74    70           70    -4
5    Esquevelle           3    59.5    5    2.85     3.0   89    83           83    -6
6    Siberian Steel       3    51.5    6    3.85     3.0   81    67           71    -10
7    San Simon            3    56.0    7    6.00     3.0   86    76           76    -10
8    Cian The Conqueror   5    57.0    8    7.50     0.0   84    84           84    +0
9    Suryavarman          2    59.5    9    9.00     2.0   89    85           85    -4
10   Prophet              2    60.5    10   9.10     2.0   91    87           87    -4
11   What A Tiger         5    55.5    11   14.00    0.0   81    81           81    +0
99   Dr Faustus           2    59.0    99   0.00     2.0   -     84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Halberdier 77 83 77 +6 3.5 -
2 Longsword 79 72 71 +1 2.0 -
3 Silver Tudor Line 91 99 91 +8 0.0
4 Max The Otter 74 72 70 +2 2.0 -
5 Esquevelle 89 86 83 +3 3.0 -
6 Siberian Steel 81 80 71 +9 3.0 -
7 San Simon 86 86 76 +10 3.0 -
8 Cian The Conqueror 84 81 84 -3 0.0 -
9 Suryavarman 89 84 85 -1 2.0 -
10 Prophet 91 66 87 -21 2.0 -
11 What A Tiger 81 71 81 -10 0.0 -
99 Dr Faustus - 78 84 -6 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