Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Tune Again
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
2 / 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    Miss Tucker          3    60.0    1    0.00     5.0   53    36           36    -17
2    Tune Again           6    60.0    2    2.50     0.0   48    48           48    +0
3    Royal Venus          2    60.0    3    4.00     0.0   52    47           47    -5
4    Keenonkelly          2    60.0    4    7.75     0.0   63    46           53    -10
5    Roadlesstravelled    2    60.0    5    7.85     0.0   50    46           46    -4
6    Lady D'arbanville    2    60.0    6    8.35     0.0   70    46           60    -10
7    Secret Summer        2    60.0    7    10.10    0.0   67    46           57    -10
8    Future Contract      3    60.0    8    18.85    5.0   42    36           36    -6
9    Ntombencane          3    60.0    9    21.10    5.0   -     36           36    +36
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Miss Tucker 53 48 36 +12 5.0 -
2 Tune Again Line 48 50 48 +2 0.0
3 Royal Venus 52 50 47 +3 0.0 -
4 Keenonkelly 63 53 53 ✓ Match 0.0 -
5 Roadlesstravelled 50 47 46 +1 0.0 -
6 Lady D'arbanville 70 70 60 +10 0.0 -
7 Secret Summer 67 52 57 -5 0.0 -
8 Future Contract 42 40 36 +4 5.0 -
9 Ntombencane - 38 36 +2 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