Official NHA Assessment

Race 8: WILGERBOSDRIFT BRIDGET OPPENHEIMER OAKS (Grade 2) (For 3 year-old Fillies (3rd Leg of SA Triple Tiara))

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Line Horse
Reny
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
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    None Other           5    60.0    1    0.00     0.0   104   103          103   -1
2    Reny                 2    60.0    2    2.75     0.0   106   106          106   +0
3    Lady Of Power        2    60.0    3    3.50     0.0   109   105          105   -4
4    Bless My Stars       2    60.0    4    5.75     0.0   109   103          103   -6
5    Silver Hills         3    60.0    5    5.85     5.5   100   92           92    -8
6    Ipso Facto           2    60.0    6    7.50     0.0   89    103          103   +14
7    Namaqua Blossom      3    60.0    7    11.25    5.5   85    92           92    +7
8    Littlemarysunshine   2    60.0    8    11.75    0.0   93    103          103   +10
9    Raratonga Rose       2    60.0    9    14.00    0.0   90    103          103   +13
10   Light Of Day         5    60.0    10   18.00    0.0   80    103          103   +23
99   Emirate Gina         2    60.0    99   0.00     0.0   -     103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 None Other 104 115 103 +12 0.0 -
2 Reny Line 106 91 106 -15 0.0
3 Lady Of Power 109 100 105 -5 0.0 -
4 Bless My Stars 109 119 103 +16 0.0 -
5 Silver Hills 100 108 92 +16 5.5 -
6 Ipso Facto 89 92 103 -11 0.0 -
7 Namaqua Blossom 85 75 92 -17 5.5 -
8 Littlemarysunshine 93 95 103 -8 0.0 -
9 Raratonga Rose 90 80 103 -23 0.0 -
10 Light Of Day 80 61 103 -42 0.0 -
99 Emirate Gina - 103 103 ✓ 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