Official NHA Assessment

Race 2: TAB TELEBET 0861 000 822 MAIDEN PLATE (For Maidens. R15 000 Win bonus ROA Members)

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Line Horse
William's Legacy
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
5 / 9
Within 2 points
Significant Diffs
2 / 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    Outer Dimension      2    57.0    1    0.00     0.0   69    64           64    -5
2    William's Legacy     2    60.0    2    5.50     0.0   70    70           70    +0
3    Island Master        3    60.0    3    6.00     2.5   59    65           65    +6
4    Specmagic            3    60.0    4    6.10     2.5   70    65           65    -5
5    Hat Hot Hat          4    60.0    5    8.35     1.0   71    68           68    -3
6    Jet Bund             2    56.0    6    9.60     0.0   70    62           62    -8
7    Master Of Defense    3    60.0    7    13.85    2.5   61    65           65    +4
8    Magic Measure        2    57.0    8    99.99    0.0   28    64           64    +36
99   Equilibrium          2    57.0    99   0.00     0.0   -     64           64    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Outer Dimension 69 70 64 +6 0.0 -
2 William's Legacy Line 70 66 70 -4 0.0
3 Island Master 59 67 65 +2 2.5 -
4 Specmagic 70 70 65 +5 2.5 -
5 Hat Hot Hat 71 66 68 -2 1.0 -
6 Jet Bund 70 64 62 +2 0.0 -
7 Master Of Defense 61 63 65 -2 2.5 -
8 Magic Measure 28 28 64 -36 0.0 -
99 Equilibrium - 65 64 +1 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