Official NHA Assessment

Race 5: RACING ASSOCIATION CONTRIBUTES R5000 PINNACLE STAKES (Open to all horses)

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Line Horse
Miss Orange
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
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    Divine Odyssey       7    62.0    1    0.00     0.0   110   99           99    -11
2    Miss Orange          5    57.5    2    1.25     0.0   96    96           96    +0
3    Great Warrior        5    55.0    3    2.50     0.0   80    89           89    +9
4    Ancient Times        4    59.5    4    5.00     3.5   95    87           87    -8
5    Barberton Silver     5    61.0    5    8.50     0.0   98    97           97    -1
6    Assured              4    49.5    6    10.75    3.5   77    67           67    -10
7    Port Key             6    55.0    7    13.75    0.0   76    85           85    +9
8    Aranjuez             7    62.0    8    14.50    0.0   103   99           99    -4
99   Jacob's Ladder       4    56.5    99   0.00     3.5   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Divine Odyssey 110 107 99 +8 0.0 -
2 Miss Orange Line 96 86 96 -10 0.0
3 Great Warrior 80 78 89 -11 0.0 -
4 Ancient Times 95 95 87 +8 3.5 -
5 Barberton Silver 98 97 97 ✓ Match 0.0 -
6 Assured 77 76 67 +9 3.5 -
7 Port Key 76 62 85 -23 0.0 -
8 Aranjuez 103 103 99 +4 0.0 -
99 Jacob's Ladder - 73 81 -8 3.5 -
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