Official NHA Assessment

Race 7: TAB TELEBET 0861 000 822 PINNACLE STAKES (Open)

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Line Horse
Sound Of Summer
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 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    58.0    1    0.00     0.0   113   107          107   -6
2    Xavion               3    52.0    2    1.80     1.0   98    96           96    -2
3    Castletown           3    52.0    3    2.20     1.0   99    96           96    -3
4    Sound Of Summer      4    56.0    4    3.50     0.5   103   103          103   +0
5    Mardi Gras           7    56.0    5    3.60     0.0   102   104          104   +2
6    Ikigai               8    58.0    6    7.25     0.0   108   107          107   -1
7    Outofthedarkness     3    58.0    7    10.25    1.0   110   105          105   -5
8    Eliud                4    60.0    8    17.25    0.5   112   110          110   -2
99   Willow Express       7    56.0    99   0.00     0.0   -     103          103   +0
99   Shivers              5    51.0    99   0.00     0.0   -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Robertson 113 124 107 +17 0.0 -
2 Xavion 98 101 96 +5 1.0 -
3 Castletown 99 90 96 -6 1.0 -
4 Sound Of Summer Line 103 99 103 -4 0.5
5 Mardi Gras 102 83 104 -21 0.0 -
6 Ikigai 108 91 107 -16 0.0 -
7 Outofthedarkness 110 101 105 -4 1.0 -
8 Eliud 112 112 110 +2 0.5 -
99 Willow Express - 82 103 -21 0.0 -
99 Shivers - 93 93 ✓ Match 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