Official NHA Assessment

Race 7: OPEN A TABGOLD ACCOUNT - 031 314 1874 MR 82 HANDICAP (Open)

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Line Horse
Princekresh
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
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    Stanley Park         2    56.5    1    0.00     0.5   76    86           76    +0
2    Rafa's Boy           2    54.0    2    0.30     0.5   79    81           81    +2
3    Princekresh          4    53.5    3    1.50     2.0   77    77           77    +0
4    Trafalgar Square     6    52.0    4    2.40     0.0   66    78           78    +12
5    Gimme A Rainbow      4    57.0    5    3.10     2.0   76    84           84    +8
6    Honshu               2    55.5    6    4.60     0.5   88    84           84    -4
99   Chara Sands          3    58.5    99   0.00     1.5   -     88           88    +0
99   Dandolo              4    61.0    99   0.00     2.0   -     92           92    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Stanley Park 76 69 76 -7 0.5 -
2 Rafa's Boy 79 79 81 -2 0.5 -
3 Princekresh Line 77 72 77 -5 2.0
4 Trafalgar Square 66 69 78 -9 0.0 -
5 Gimme A Rainbow 76 74 84 -10 2.0 -
6 Honshu 88 71 84 -13 0.5 -
99 Chara Sands - 70 88 -18 1.5 -
99 Dandolo - 86 92 -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