Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MR 80 HANDICAP (Open)

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Line Horse
Masked Vigilante
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 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    Song Of Myself       3    60.0    1    0.00     2.0   80    80           80    +0
2    Beechamwood Boy      6    58.0    2    1.50     0.0   76    80           80    +4
3    Masked Vigilante     3    61.0    3    1.55     2.0   82    82           82    +0
4    Four Jacks           4    56.0    4    3.05     2.5   72    71           71    -1
5    Travel Master        4    57.5    5    3.30     2.5   75    74           74    -1
6    Guarding The Wall    4    53.5    6    4.05     2.5   67    66           66    -1
7    Abound               4    60.0    7    4.15     2.5   85    79           79    -6
8    Roomformanoeuvre     4    57.0    8    6.40     2.5   74    73           73    -1
9    Strange Magic        5    58.0    9    8.90     0.0   76    80           80    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Song Of Myself 80 100 80 +20 2.0 -
2 Beechamwood Boy 76 84 80 +4 0.0 -
3 Masked Vigilante Line 82 78 82 -4 2.0
4 Four Jacks 72 65 71 -6 2.5 -
5 Travel Master 75 65 74 -9 2.5 -
6 Guarding The Wall 67 67 66 +1 2.5 -
7 Abound 85 77 79 -2 2.5 -
8 Roomformanoeuvre 74 69 73 -4 2.5 -
9 Strange Magic 76 69 80 -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