Official NHA Assessment

Race 3: WWW.TAB4RACING.COM GRADUATION PLATE (3 year olds) (For 1 & 2 time winners and maidens)

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Line Horse
Feather Boa
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
6 / 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    Feather Boa          2    57.0    1    0.00     0.0   99    99           99    +0
2    Meridius             2    60.0    2    0.75     0.0   88    109          109   +21
3    Raffles              2    60.0    3    2.75     0.0   91    107          107   +16
4    Thymetoshine         5    59.5    4    4.75     0.0   90    104          104   +14
5    Futurewolff          5    55.5    5    5.75     0.0   70    96           96    +26
6    Hephaestus           3    57.0    6    99.99    9.0   -     81           81    +81
99   Total Protection     2    58.5    99   0.00     0.0   -     102          102   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Feather Boa Line 99 114 99 +15 0.0
2 Meridius 88 115 109 +6 0.0 -
3 Raffles 91 105 107 -2 0.0 -
4 Thymetoshine 90 51 104 -53 0.0 -
5 Futurewolff 70 75 96 -21 0.0 -
6 Hephaestus - 10 81 -71 9.0 -
99 Total Protection - 96 102 -6 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