Official NHA Assessment

Race 8: L'ORMARINS KING'S PLATE (WFA) (Grade 1) (Open To Horses At Weight For Age)

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Line Horse
Jet Dark
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 11
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    Al Muthana (AUS)     4    60.0    1    0.00     2.5   125   127          127   +2
2    Charles Dickens      2    55.0    2    0.20     0.0   128   122          122   -6
3    Jet Dark             4    60.0    3    1.55     2.5   130   130          130   +0
4    Kommetdieding        4    60.0    4    1.85     2.5   129   130          130   +1
5    Linebacker           4    60.0    5    5.35     2.5   124   127          127   +3
6    Zapatillas           3    60.0    6    5.40     5.0   118   122          122   +4
7    Golden Ducat         6    60.0    7    7.40     0.0   125   132          132   +7
8    Russian Rock         4    60.0    8    9.40     2.5   111   127          127   +16
9    Trip Of Fortune      3    60.0    9    18.65    5.0   119   122          122   +3
10   Speed Machine        4    60.0    10   18.70    2.5   108   127          127   +19
99   Waterberry Lane      6    60.0    99   0.00     0.0   -     132          132   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Al Muthana (AUS) 125 114 127 -13 2.5 -
2 Charles Dickens 128 132 122 +10 0.0 -
3 Jet Dark Line 130 130 130 ✓ Match 2.5
4 Kommetdieding 129 129 130 -1 2.5 -
5 Linebacker 124 108 127 -19 2.5 -
6 Zapatillas 118 116 122 -6 5.0 -
7 Golden Ducat 125 116 132 -16 0.0 -
8 Russian Rock 111 105 127 -22 2.5 -
9 Trip Of Fortune 119 127 122 +5 5.0 -
10 Speed Machine 108 104 127 -23 2.5 -
99 Waterberry Lane - 108 132 -24 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