Official NHA Assessment

Race 8: JOIN THE FESTIVITIES www.capeturfclub.co.za CLASS 5 (Open. Benchmark at 60.0kg = 66)

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Line Horse
Golden Grey
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
8 / 11
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    Ozark                4    55.0    1    0.00     6.0   60    52           52    -8
2    Golden Grey          4    59.0    2    0.40     6.0   65    65           65    +0
3    Unsolved Riddle      3    60.0    3    0.50     8.5   66    62           62    -4
4    Naushon              3    61.0    4    2.25     8.5   68    62           62    -6
5    Tothemoonandback     5    60.5    5    2.30     0.0   67    77           77    +10
6    Flight Display       2    57.5    6    2.35     0.0   62    71           71    +9
7    Mothership           5    53.0    7    2.65     0.0   52    62           62    +10
8    Blame It On Me       4    53.0    8    2.95     6.0   52    50           50    -2
9    Gold Index           3    59.5    9    3.15     8.5   65    58           58    -7
10   Simply Beautiful     3    57.0    10   10.65    8.5   60    51           51    -9
99   Beer With The Boys   3    54.5    99   0.00     8.5   -     46           46    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ozark 60 61 52 +9 6.0 -
2 Golden Grey Line 65 64 65 -1 6.0
3 Unsolved Riddle 66 77 62 +15 8.5 -
4 Naushon 68 68 62 +6 8.5 -
5 Tothemoonandback 67 69 77 -8 0.0 -
6 Flight Display 62 81 71 +10 0.0 -
7 Mothership 52 50 62 -12 0.0 -
8 Blame It On Me 52 65 50 +15 6.0 -
9 Gold Index 65 53 58 -5 8.5 -
10 Simply Beautiful 60 55 51 +4 8.5 -
99 Beer With The Boys - 59 46 +13 8.5 -
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