Official NHA Assessment

Race 4: TAB HAWAII STAKES (Grade 2) (Open)

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Line Horse
Celtic Rumours
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
8 / 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    Sandringham Summit   2    57.5    1    0.00     0.0   123   108          108   -15
2    Lucky Lad            4    57.5    2    1.25     1.0   117   110          110   -7
3    White Pearl          4    53.0    3    3.00     1.0   112   99           102   -10
4    Celtic Rumours       5    55.5    4    3.25     0.0   106   106          106   +0
5    Unzen                3    58.0    5    3.50     2.0   109   106          106   -3
6    Savannah Storm       5    58.0    6    6.00     0.0   103   109          109   +6
7    At My Command        2    58.0    7    6.25     0.0   124   109          114   -10
8    Texas Red            5    58.0    8    8.25     0.0   104   109          109   +5
9    Anfields Rocket      5    60.0    9    13.25    0.0   115   113          113   -2
10   Mujbar (GB)          6    58.0    10   99.99    0.0   105   109          109   +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sandringham Summit 123 123 108 +15 0.0 -
2 Lucky Lad 117 118 110 +8 1.0 -
3 White Pearl 112 114 102 +12 1.0 -
4 Celtic Rumours Line 106 104 106 -2 0.0
5 Unzen 109 116 106 +10 2.0 -
6 Savannah Storm 103 102 109 -7 0.0 -
7 At My Command 124 116 114 +2 0.0 -
8 Texas Red 104 119 109 +10 0.0 -
9 Anfields Rocket 115 106 113 -7 0.0 -
10 Mujbar (GB) 105 103 109 -6 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