Official NHA Assessment

Race 7: TAB 4RACING APP MR 69 HANDICAP (Open)

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Line Horse
Silent Trigger
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 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    Above The Horizon    2    60.0    1    0.00     0.0   81    66           81    +0
2    Panning Gold         3    58.5    2    0.10     6.0   66    51           56    -10
3    Silent Trigger       6    56.5    3    1.85     0.0   62    62           62    +0
4    Future Saint         4    53.0    4    1.90     3.0   55    49           49    -6
5    Mr Belvedere         4    52.0    5    5.15     3.0   61    44           51    -10
6    Outback Express      2    55.5    6    5.25     0.0   80    57           70    -10
7    Prolific Star        3    58.0    7    7.50     6.0   65    50           55    -10
8    Run The World        3    56.5    8    7.75     6.0   62    47           52    -10
9    Only A Poet          3    53.0    9    8.00     6.0   63    40           53    -10
10   King's Sailor        3    59.0    10   10.25    6.0   67    52           57    -10
99   Tower Of London      2    56.5    99   0.00     0.0   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Above The Horizon 81 86 81 +5 0.0 -
2 Panning Gold 66 68 56 +12 6.0 -
3 Silent Trigger Line 62 60 62 -2 0.0
4 Future Saint 55 53 49 +4 3.0 -
5 Mr Belvedere 61 55 51 +4 3.0 -
6 Outback Express 80 71 70 +1 0.0 -
7 Prolific Star 65 64 55 +9 6.0 -
8 Run The World 62 60 52 +8 6.0 -
9 Only A Poet 63 59 53 +6 6.0 -
10 King's Sailor 67 67 57 +10 6.0 -
99 Tower Of London - 70 59 +11 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