Official NHA Assessment

Race 4: CAPE SUMMER SEASON OF CHAMPIONS CLASS 4 (Open. Benchmark at 60.0kg = 78)

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Line Horse
Unicorn Alert
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
8 / 10
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    Oriental Charm       3    57.5    1    0.00     5.0   83    80           80    -3
2    Fibonacci            2    58.5    2    1.25     0.0   85    96           96    +11
3    Unicorn Alert        3    58.0    3    1.55     5.0   84    84           84    +0
4    Infrared             3    60.0    4    1.85     5.0   88    88           88    +0
5    Faire Advantage      3    59.0    5    3.60     5.0   76    84           84    +8
6    Escarpment           4    56.0    6    5.10     3.0   80    81           81    +1
7    Oliver               5    60.0    7    5.60     0.0   78    95           95    +17
8    Bristol Hercules     2    59.0    8    6.00     0.0   86    93           93    +7
9    Gypsy Express        5    55.0    9    20.00    0.0   68    85           85    +17
99   Trippi's Silk        4    60.5    99   0.00     3.0   -     90           90    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oriental Charm 83 127 80 +47 5.0 -
2 Fibonacci 85 73 96 -23 0.0 -
3 Unicorn Alert Line 84 61 84 -23 5.0
4 Infrared 88 101 88 +13 5.0 -
5 Faire Advantage 76 71 84 -13 5.0 -
6 Escarpment 80 79 81 -2 3.0 -
7 Oliver 78 97 95 +2 0.0 -
8 Bristol Hercules 86 87 93 -6 0.0 -
9 Gypsy Express 68 58 85 -27 0.0 -
99 Trippi's Silk - 73 90 -17 3.0 -
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