Official NHA Assessment

Race 6: TAB IGUGU STAKES (Grade 2) (For Fillies and Mares at Weight for Age + Penalties)

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Line Horse
Perfect Witness
Reference for assessment
Exact Matches
3 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
4 / 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    Beating Wings        4    55.5    1    0.00     1.5   112   100          100   -12
2    My Soul Mate         4    55.5    2    0.40     1.5   115   107          107   -8
3    Bellevarde           3    59.0    3    1.00     3.5   96    109          109   +13
4    Gilded Butterfly     3    60.0    4    3.25     3.5   108   108          108   +0
5    Perfect Witness      3    59.0    5    4.00     3.5   105   105          105   +0
6    None Other           5    60.0    6    7.25     0.0   110   112          112   +2
7    Emirate Gina         2    59.0    7    8.50     0.0   105   110          110   +5
8    Ipso Facto           2    59.0    8    12.50    0.0   94    110          110   +16
9    Future Girl          2    59.0    9    19.75    0.0   96    110          110   +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Beating Wings 112 112 100 +12 1.5 -
2 My Soul Mate 115 107 107 ✓ Match 1.5 -
3 Bellevarde 96 107 109 -2 3.5 -
4 Gilded Butterfly 108 108 108 ✓ Match 3.5 -
5 Perfect Witness Line 105 105 105 ✓ Match 3.5
6 None Other 110 115 112 +3 0.0 -
7 Emirate Gina 105 103 110 -7 0.0 -
8 Ipso Facto 94 92 110 -18 0.0 -
9 Future Girl 96 97 110 -13 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