Official NHA Assessment

Race 3: TAB GOLD BOWL (Listed) (Open)

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Line Horse
Twenty Drachma's
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 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    Taxhaven             4    56.0    1    0.00     2.0   75    93           81    +6
2    Nebraas              8    60.0    2    0.25     0.0   99    105          105   +6
3    My Soul Mate         4    59.5    3    5.25     2.0   107   100          100   -7
4    United Council       5    59.5    4    7.00     0.0   102   104          104   +2
5    Twenty Drachma's     4    56.0    5    8.40     2.0   93    93           93    +0
6    To The Rescue        4    56.0    6    8.50     2.0   82    93           93    +11
7    Arumugam             6    58.0    7    12.75    0.0   94    101          101   +7
8    Battleground         5    58.0    8    25.00    0.0   96    101          101   +5
9    Explosive Bond       4    57.5    9    32.75    2.0   99    96           96    -3
10   Breeze Over          5    60.0    10   34.25    0.0   100   105          105   +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Taxhaven 75 96 81 +15 2.0 -
2 Nebraas 99 101 105 -4 0.0 -
3 My Soul Mate 107 107 100 +7 2.0 -
4 United Council 102 100 104 -4 0.0 -
5 Twenty Drachma's Line 93 83 93 -10 2.0
6 To The Rescue 82 82 93 -11 2.0 -
7 Arumugam 94 74 101 -27 0.0 -
8 Battleground 96 92 101 -9 0.0 -
9 Explosive Bond 99 94 96 -2 2.0 -
10 Breeze Over 100 99 105 -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