Official NHA Assessment

Race 7: TOTE - SPEED. POWER. GLORY CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 82)

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Line Horse
Copacabana
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 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    She's A Machine      2    60.5    1    0.00     0.0   84    90           90    +6
2    One Path             3    56.5    2    0.15     7.0   76    68           68    -8
3    Light Of Gabriel     2    54.0    3    0.35     0.0   84    82           82    -2
4    Copacabana           4    53.5    4    0.50     4.5   72    72           72    +0
5    Blind Speed          2    54.0    5    1.90     0.0   71    80           80    +9
6    Rahhabba             3    56.5    6    8.90     7.0   76    68           68    -8
7    Roy Taking Off       4    48.0    7    14.40    4.5   58    56           56    -2
99   Shesha Ntombi        3    56.0    99   0.00     7.0   -     67           67    +0
99   Ovation Star         3    57.0    99   0.00     7.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 She's A Machine 84 85 90 -5 0.0 -
2 One Path 76 76 68 +8 7.0 -
3 Light Of Gabriel 84 90 82 +8 0.0 -
4 Copacabana Line 72 74 72 +2 4.5
5 Blind Speed 71 65 80 -15 0.0 -
6 Rahhabba 76 89 68 +21 7.0 -
7 Roy Taking Off 58 54 56 -2 4.5 -
99 Shesha Ntombi - 74 67 +7 7.0 -
99 Ovation Star - 94 69 +25 7.0 -
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