Official NHA Assessment

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

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Line Horse
Jet Dark
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 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    Jet Dark             4    60.0    1    0.00     0.5   130   130          130   +0
2    Kommetdieding        4    60.0    2    0.25     0.5   128   130          130   +2
3    Astrix               5    60.0    3    2.45     0.0   122   133          133   +11
4    Linebacker           4    60.0    4    2.85     0.5   125   132          132   +7
5    Al Muthana (AUS)     4    60.0    5    5.25     0.5   125   130          130   +5
6    Russian Rock         4    60.0    6    6.05     0.5   120   130          130   +10
7    Mk's Pride           4    60.0    7    6.45     0.5   122   130          130   +8
8    FireAlley            7    60.0    8    9.95     0.0   112   131          131   +19
9    Crown Towers (AUS)   6    60.0    9    10.85    0.0   115   131          131   +16
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jet Dark Line 130 130 130 ✓ Match 0.5
2 Kommetdieding 128 129 130 -1 0.5 -
3 Astrix 122 118 133 -15 0.0 -
4 Linebacker 125 108 132 -24 0.5 -
5 Al Muthana (AUS) 125 114 130 -16 0.5 -
6 Russian Rock 120 105 130 -25 0.5 -
7 Mk's Pride 122 116 130 -14 0.5 -
8 FireAlley 112 107 131 -24 0.0 -
9 Crown Towers (AUS) 115 113 131 -18 0.0 -
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