Official NHA Assessment

Race 8: HOLLYWOODBETS MATCHEM STAKES (Grade 3) (Open at Weight For Age + Penalties)

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Line Horse
Royal Aussie
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
6 / 7
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    Charles Dickens      2    59.5    1    0.00     0.0   132   122          122   -10
2    Gimme A Prince       3    60.0    2    0.30     7.0   130   114          120   -10
3    Royal Aussie         2    56.5    3    2.30     0.0   118   118          118   +0
4    After The Rain       4    57.0    4    3.30     4.5   104   109          109   +5
5    Cosmic Highway       3    57.0    5    4.80     7.0   108   103          103   -5
6    Runaway Song         6    58.0    6    5.55     0.0   116   119          119   +3
7    Bright Green         2    56.5    7    12.80    0.0   101   116          116   +15
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Charles Dickens 132 132 122 +10 0.0 -
2 Gimme A Prince 130 134 120 +14 7.0 -
3 Royal Aussie Line 118 120 118 +2 0.0
4 After The Rain 104 98 109 -11 4.5 -
5 Cosmic Highway 108 115 103 +12 7.0 -
6 Runaway Song 116 98 119 -21 0.0 -
7 Bright Green 101 76 116 -40 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