Official NHA Assessment

Race 5: VINAY DOOKHI OPTOMETRISTS & SASHINI KRISHNA PSYCHOLOGIST MR 69 HANDICAP (Open)

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Line Horse
Happy Wanderer
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
3 / 10
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    Trafalgar Square     6    58.0    1    0.00     0.0   65    65           65    +0
2    Philispiel           7    56.5    2    1.50     0.0   65    62           62    -3
3    Happy Wanderer       5    55.0    3    1.90     0.0   59    59           59    +0
4    Blue Eyes            4    55.5    4    1.95     10.0  60    40           50    -10
5    Woodstock Festival   6    54.5    5    2.15     0.0   63    58           58    -5
6    Pacific Winter       5    56.0    6    2.65     0.0   61    61           61    +0
7    Calvino              4    48.0    7    3.35     10.0  49    25           39    -10
8    Ndaka                3    59.0    8    4.15     8.5   67    50           57    -10
9    Brave Voyager        3    54.0    9    5.95     8.5   57    40           47    -10
10   Hampton Court        7    60.5    10   6.35     0.0   70    70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Trafalgar Square 65 69 65 +4 0.0 -
2 Philispiel 65 70 62 +8 0.0 -
3 Happy Wanderer Line 59 55 59 -4 0.0
4 Blue Eyes 60 56 50 +6 10.0 -
5 Woodstock Festival 63 57 58 -1 0.0 -
6 Pacific Winter 61 60 61 -1 0.0 -
7 Calvino 49 51 39 +12 10.0 -
8 Ndaka 67 61 57 +4 8.5 -
9 Brave Voyager 57 51 47 +4 8.5 -
10 Hampton Court 70 70 70 ✓ 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