Official NHA Assessment

Race 8: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (Open)

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Line Horse
Quantum Theory
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 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    William Robertson    6    62.0    1    0.00     0.0   125   124          124   -1
2    Quantum Theory       5    54.0    2    0.40     0.0   108   108          108   +0
3    Prophet              2    54.0    3    3.25     3.0   108   102          102   -6
4    Ikigai               8    52.0    4    6.75     0.0   100   104          104   +4
5    Full Velocity        4    55.5    5    7.00     5.0   113   101          103   -10
6    Eden Roc             5    56.0    6    8.25     0.0   110   112          112   +2
7    Sprinkles            3    53.5    7    9.25     4.5   110   98           100   -10
8    Lucy In The Sky      4    50.0    8    10.25    5.0   94    90           90    -4
9    Val d'Orcia          3    56.0    9    11.50    4.5   108   103          103   -5
10   Astrix               5    59.5    10   11.55    0.0   122   119          119   -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Robertson 125 124 124 ✓ Match 0.0 -
2 Quantum Theory Line 108 112 108 +4 0.0
3 Prophet 108 66 102 -36 3.0 -
4 Ikigai 100 91 104 -13 0.0 -
5 Full Velocity 113 94 103 -9 5.0 -
6 Eden Roc 110 98 112 -14 0.0 -
7 Sprinkles 110 105 100 +5 4.5 -
8 Lucy In The Sky 94 74 90 -16 5.0 -
9 Val d'Orcia 108 105 103 +2 4.5 -
10 Astrix 122 118 119 -1 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