Official NHA Assessment

Race 5: OPEN A TABGOLD ACCOUNT - 031 314 1874 MR 65 HANDICAP (Open)

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Line Horse
One Irish Rover
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
5 / 9
Within 2 points
Significant Diffs
3 / 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    Forest Jump          8    58.5    1    0.00     0.0   62    59           62    +0
2    L'Ultimo             2    55.0    2    0.30     0.0   58    57           57    -1
3    One Irish Rover      5    59.0    3    1.35     0.0   63    63           63    +0
4    Wave Warrior         3    59.5    4    4.85     8.0   64    45           54    -10
5    Count Marsh          7    55.5    5    6.65     0.0   56    53           53    -3
6    Brave Voyager        3    57.0    6    6.70     8.0   59    40           49    -10
7    Gorgeous Dude        4    59.5    7    10.10    5.0   65    51           55    -10
8    Plettenberg          3    58.5    8    10.80    8.0   63    43           53    -10
99   Basie Raakvat        4    60.5    99   0.00     5.0   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Forest Jump 62 62 62 ✓ Match 0.0 -
2 L'Ultimo 58 61 57 +4 0.0 -
3 One Irish Rover Line 63 65 63 +2 0.0
4 Wave Warrior 64 68 54 +14 8.0 -
5 Count Marsh 56 52 53 -1 0.0 -
6 Brave Voyager 59 51 49 +2 8.0 -
7 Gorgeous Dude 65 55 55 ✓ Match 5.0 -
8 Plettenberg 63 59 53 +6 8.0 -
99 Basie Raakvat - 63 53 +10 5.0 -
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