Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden F & M)

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Line Horse
Vanakkam
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
9 / 11
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    Vanakkam             2    55.0    1    0.00     5.5   83    83           83    +0
2    Tempranillo          2    59.0    2    1.30     5.5   -     91           91    +91
3    Power Of Pearls      2    59.0    3    2.80     5.5   76    91           91    +15
4    Sakura Hanami        3    59.0    4    5.30     8.5   -     85           85    +85
5    Raceway              2    59.0    5    7.70     5.5   76    91           91    +15
6    Princess Of All      3    59.0    6    10.40    8.5   -     85           85    +85
7    Chilli Marmalade     5    60.0    7    15.70    0.0   52    104          104   +52
8    Dress Code           4    60.0    8    34.00    10.0  -     84           84    +84
99   Aquarius             3    59.0    99   0.00     8.5   -     85           85    +0
99   Gaslight Dancer      2    59.0    99   0.00     5.5   -     91           91    +0
99   Explosive Power      2    59.0    99   0.00     5.5   -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vanakkam Line 83 93 83 +10 5.5
2 Tempranillo - 80 91 -11 5.5 -
3 Power Of Pearls 76 73 91 -18 5.5 -
4 Sakura Hanami - 80 85 -5 8.5 -
5 Raceway 76 74 91 -17 5.5 -
6 Princess Of All - 73 85 -12 8.5 -
7 Chilli Marmalade 52 48 104 -56 0.0 -
8 Dress Code - - 84 -84 10.0 -
99 Aquarius - 81 85 -4 8.5 -
99 Gaslight Dancer - 85 91 -6 5.5 -
99 Explosive Power - 54 91 -37 5.5 -
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