Official NHA Assessment

Race 5: BETWAY MR 76 HANDICAP (Open)

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Line Horse
The Navy Lark
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 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    What A Tiger         5    61.5    1    0.00     0.0   79    104          79    +0
2    Var Park             5    60.0    2    1.25     0.0   76    101          101   +25
3    King Of Venus        4    59.5    3    1.75     10.0  75    80           80    +5
4    The Navy Lark        4    59.0    4    2.25     10.0  79    79           79    +0
5    Sakhala Is'Cathulo   3    58.5    5    2.30     8.5   73    81           81    +8
6    Secret Chord         4    61.0    6    2.75     10.0  78    83           83    +5
7    Vegas Hi Rise        6    61.0    7    4.00     0.0   78    103          103   +25
8    Munchkin             5    58.0    8    7.75     0.0   72    97           97    +25
9    Stormy Seas          4    61.5    9    10.00    10.0  79    84           84    +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 What A Tiger 79 71 79 -8 0.0 -
2 Var Park 76 87 101 -14 0.0 -
3 King Of Venus 75 87 80 +7 10.0 -
4 The Navy Lark Line 79 74 79 -5 10.0
5 Sakhala Is'Cathulo 73 66 81 -15 8.5 -
6 Secret Chord 78 92 83 +9 10.0 -
7 Vegas Hi Rise 78 71 103 -32 0.0 -
8 Munchkin 72 65 97 -32 0.0 -
9 Stormy Seas 79 77 84 -7 10.0 -
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