Official NHA Assessment

Race 2: BET WITH TOTE MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Siyabambelela
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 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    Luthando             3    60.0    1    0.00     3.5   -     69           6     +6
2    Flying Fate          3    60.0    2    1.10     3.5   -     69           69    +69
3    Siyabambelela        4    60.0    3    1.60     4.0   68    68           68    +0
4    Warrior Rose         3    60.0    4    2.30     3.5   -     69           69    +69
5    Tipperary            3    60.0    5    4.00     3.5   66    69           69    +3
6    Peach Melba          3    60.0    6    5.30     3.5   78    69           69    -9
7    Rosa Osiria          3    60.0    7    14.20    3.5   57    69           69    +12
8    Chaos Queen          3    60.0    8    20.90    3.5   -     69           69    +69
9    Amphitrite           3    56.0    9    26.00    3.5   62    61           61    -1
10   Bella Magic          3    60.0    10   99.99    3.5   -     69           69    +69
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Luthando - 78 6 +72 3.5 -
2 Flying Fate - - 69 -69 3.5 -
3 Siyabambelela Line 68 68 68 ✓ Match 4.0
4 Warrior Rose - 68 69 -1 3.5 -
5 Tipperary 66 64 69 -5 3.5 -
6 Peach Melba 78 78 69 +9 3.5 -
7 Rosa Osiria 57 57 69 -12 3.5 -
8 Chaos Queen - - 69 -69 3.5 -
9 Amphitrite 62 62 61 +1 3.5 -
10 Bella Magic - 44 69 -25 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