Official NHA Assessment

Race 8: THE HKJC CHAMPIONS CUP (Grade 1) (Horses at Weight-For-Age)

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Line Horse
Cousin Casey
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
5 / 10
Within 2 points
Significant Diffs
4 / 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    Dave The King        2    60.0    1    0.00     0.0   127   122          122   -5
2    Cousin Casey         2    60.0    2    1.40     0.0   125   125          125   +0
3    Purple Pitcher       4    58.5    3    2.40     0.5   120   120          120   +0
3    See It Again         2    60.0    3    2.40     0.0   131   124          124   -7
5    Flag Man             3    58.5    5    2.70     1.5   126   118          118   -8
6    Royal Victory        5    60.0    6    3.10     0.0   125   124          124   -1
7    Hluhluwe             2    58.5    7    3.70     0.0   116   120          120   +4
8    Barbaresco           4    58.5    8    5.60     0.5   122   118          118   -4
9    Double Superlative   3    60.0    9    10.60    1.5   124   119          119   -5
99   Winchester Mansion   3    60.0    99   0.00     1.5   -     119          119   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dave The King 127 128 122 +6 0.0 -
2 Cousin Casey Line 125 125 125 ✓ Match 0.0
3 Purple Pitcher 120 121 120 +1 0.5 -
3 See It Again 131 130 124 +6 0.0 -
5 Flag Man 126 126 118 +8 1.5 -
6 Royal Victory 125 124 124 ✓ Match 0.0 -
7 Hluhluwe 116 118 120 -2 0.0 -
8 Barbaresco 122 116 118 -2 0.5 -
9 Double Superlative 124 124 119 +5 1.5 -
99 Winchester Mansion - 129 119 +10 1.5 -
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