Official NHA Assessment

Race 3: RACEHORSE OWNERS ASSOCIATION OPEN MAIDEN (F & M) (For all Fillies & Mares. R15 000 Win bonus ROA Members)

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Line Horse
Best Intentions
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
2 / 7
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    Fanny Kemble         2    60.0    1    0.00     1.0   70    70           70    +0
2    Best Intentions      2    56.5    2    0.75     1.0   63    63           63    +0
3    La Pequenita         3    57.0    3    0.85     2.0   64    62           62    -2
4    Queen Ofthe Palace   2    54.5    4    2.10     1.0   59    59           59    +0
5    Dirty Mimosa         2    57.0    5    2.60     1.0   -     64           64    +64
6    Mad World            3    54.0    6    4.10     2.0   58    56           56    -2
7    Elusive Hunter       4    48.0    7    7.85     2.5   46    43           43    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fanny Kemble 70 68 70 -2 1.0 -
2 Best Intentions Line 63 67 63 +4 1.0
3 La Pequenita 64 62 62 ✓ Match 2.0 -
4 Queen Ofthe Palace 59 56 59 -3 1.0 -
5 Dirty Mimosa - 56 64 -8 1.0 -
6 Mad World 58 53 56 -3 2.0 -
7 Elusive Hunter 46 50 43 +7 2.5 -
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