Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY OPEN MAIDEN (F & M) (For all Maiden F&M)

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Line Horse
Sombreuil
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
3 / 8
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    Cheeky Cranberry     3    60.0    1    0.00     7.5   -     75           6     +6
2    Sombreuil            2    55.0    2    0.75     5.0   70    70           70    +0
3    Elusive Bomba        3    51.5    3    1.75     7.5   61    58           58    -3
4    Mediterraneanflame   3    51.5    4    3.00     7.5   62    58           58    -4
5    Tanzanite            2    60.0    5    3.10     5.0   -     80           80    +80
6    French Romance       3    60.0    6    4.35     7.5   -     75           75    +75
7    Night In Japan       3    49.5    7    4.60     7.5   57    54           54    -3
8    Zara Diva            2    49.0    8    9.85     5.0   59    58           58    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cheeky Cranberry - 83 6 +77 7.5 -
2 Sombreuil Line 70 70 70 ✓ Match 5.0
3 Elusive Bomba 61 59 58 +1 7.5 -
4 Mediterraneanflame 62 60 58 +2 7.5 -
5 Tanzanite - 73 80 -7 5.0 -
6 French Romance - - 75 -75 7.5 -
7 Night In Japan 57 49 54 -5 7.5 -
8 Zara Diva 59 57 58 -1 5.0 -
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