Official NHA Assessment

Race 6: CAPE RACING CLASS 4 (Open. Benchmark at 60.0kg = 80)

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Line Horse
Trippi's Silk
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
6 / 12
Within 2 points
Significant Diffs
6 / 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    Boogiefied (AUS)     4    59.5    1    0.00     0.5   79    76           76    -3
2    Scottish Kiss        3    60.5    2    0.40     1.0   84    82           82    -2
3    Trippi's Silk        4    57.5    3    1.65     0.5   75    75           75    +0
4    Arbitration          2    58.0    4    2.40     0.0   79    76           76    -3
5    King's Quest         3    59.5    5    2.60     1.0   82    77           77    -5
6    Father Christmas     3    57.5    6    7.35     1.0   78    71           71    -7
7    Rhydian              2    60.5    7    8.60     0.0   84    79           79    -5
8    Shifting Path        2    57.0    8    10.10    0.0   74    72           72    -2
9    Dawn's Early Light   3    57.0    9    11.85    1.0   77    70           70    -7
10   Michael Faraday      2    55.0    10   13.10    0.0   69    68           68    -1
11   Famous And Rich      2    54.5    11   14.60    0.0   69    67           67    -2
12   Paratrooper          4    57.0    12   18.10    0.5   74    71           71    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Boogiefied (AUS) 79 90 76 +14 0.5 -
2 Scottish Kiss 84 100 82 +18 1.0 -
3 Trippi's Silk Line 75 73 75 -2 0.5
4 Arbitration 79 78 76 +2 0.0 -
5 King's Quest 82 89 77 +12 1.0 -
6 Father Christmas 78 79 71 +8 1.0 -
7 Rhydian 84 72 79 -7 0.0 -
8 Shifting Path 74 62 72 -10 0.0 -
9 Dawn's Early Light 77 72 70 +2 1.0 -
10 Michael Faraday 69 68 68 ✓ Match 0.0 -
11 Famous And Rich 69 66 67 -1 0.0 -
12 Paratrooper 74 73 71 +2 0.5 -
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