Official NHA Assessment

Race 4: TAB 4RACING APP MR 78 HANDICAP (Open)

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Line Horse
Alingalonga
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
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    Gold Rock            5    57.0    1    0.00     0.0   72    77           72    +0
2    Atkinson Grimshaw    4    60.0    2    0.05     2.5   78    78           78    +0
3    Alingalonga          4    58.0    3    0.15     2.5   74    74           74    +0
4    Motor City Hitman    3    58.5    4    2.65     5.0   75    72           72    -3
5    On The Road Again    3    57.5    5    3.40     5.0   73    69           69    -4
6    Super Handsome       4    56.0    6    3.45     2.5   70    71           71    +1
7    Storm Commander      5    59.5    7    4.70     0.0   77    82           82    +5
8    Royal Shindig        4    55.5    8    8.95     2.5   69    69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gold Rock 72 72 72 ✓ Match 0.0 -
2 Atkinson Grimshaw 78 75 78 -3 2.5 -
3 Alingalonga Line 74 82 74 +8 2.5
4 Motor City Hitman 75 68 72 -4 5.0 -
5 On The Road Again 73 79 69 +10 5.0 -
6 Super Handsome 70 61 71 -10 2.5 -
7 Storm Commander 77 74 82 -8 0.0 -
8 Royal Shindig 69 62 69 -7 2.5 -
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