Official NHA Assessment

Race 3: RACING TODAY OPEN MAIDEN (F & M) (For all Maiden F&M)

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Line Horse
Oh Mandy
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
1 / 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    Genteel              3    61.0    1    0.00     8.5   66    63           63    -3
2    Royal Missy          2    53.5    2    0.50     0.0   65    70           70    +5
3    Oh Mandy             3    59.5    3    1.75     8.5   63    63           63    +0
4    Seconds Out          2    51.5    4    3.00     0.0   56    63           63    +7
5    Celtique             3    56.0    5    7.00     8.5   56    53           53    -3
6    Vino Rioja           2    49.5    6    10.50    0.0   67    57           57    -10
7    Lady Penny           2    52.5    7    12.75    0.0   70    63           63    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Genteel 66 68 63 +5 8.5 -
2 Royal Missy 65 83 70 +13 0.0 -
3 Oh Mandy Line 63 64 63 +1 8.5
4 Seconds Out 56 60 63 -3 0.0 -
5 Celtique 56 58 53 +5 8.5 -
6 Vino Rioja 67 60 57 +3 0.0 -
7 Lady Penny 70 63 63 ✓ Match 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