Official NHA Assessment

Race 2: TAB 4RACING APP MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Heartlight
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
2 / 6
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    Piton De Neige       4    59.0    1    0.00     10.0  62    53           53    -9
2    Si Gioca             2    59.0    2    1.00     5.5   70    62           62    -8
3    Heartlight           2    56.0    3    4.00     5.5   56    56           56    +0
4    Best Intentions      2    59.0    4    5.00     5.5   71    62           62    -9
5    Rain Bird            2    59.0    5    5.50     5.5   -     62           62    +62
6    Happy Vibes          3    60.0    6    7.75     8.5   64    58           58    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Piton De Neige 62 57 53 +4 10.0 -
2 Si Gioca 70 62 62 ✓ Match 5.5 -
3 Heartlight Line 56 48 56 -8 5.5
4 Best Intentions 71 67 62 +5 5.5 -
5 Rain Bird - 70 62 +8 5.5 -
6 Happy Vibes 64 59 58 +1 8.5 -
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