Official NHA Assessment

Race 1: Hollywoodbets DURBANVILLE WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Big Deal
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
5 / 12
Within 2 points
Significant Diffs
5 / 12
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    Behave Harris        2    60.0    1    0.00     0.0   79    76           76    -3
2    Big Deal             2    60.0    2    4.75     0.0   76    76           76    +0
3    Red Wave             2    60.0    3    4.85     0.0   80    76           76    -4
4    Hilton Heads         3    60.0    4    5.25     4.0   -     68           68    +68
5    Cardinal Point       3    60.0    5    7.00     4.0   -     68           68    +68
6    Barry's Boy          3    60.0    6    7.30     4.0   72    68           68    -4
7    Green Commander      2    60.0    7    7.60     0.0   68    76           76    +8
8    Full Of It           3    60.0    8    9.60     4.0   -     68           68    +68
9    Born To Master       3    60.0    9    10.85    4.0   -     68           68    +68
10   Born Of Fire         3    60.0    10   12.60    4.0   -     68           68    +68
11   Undoubted The Boy    3    60.0    11   13.00    4.0   -     68           68    +68
12   Musical Sword        3    56.0    12   13.05    4.0   -     60           60    +60
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Behave Harris 79 83 76 +7 0.0 -
2 Big Deal Line 76 75 76 -1 0.0
3 Red Wave 80 76 76 ✓ Match 0.0 -
4 Hilton Heads - 73 68 +5 4.0 -
5 Cardinal Point - 70 68 +2 4.0 -
6 Barry's Boy 72 70 68 +2 4.0 -
7 Green Commander 68 71 76 -5 0.0 -
8 Full Of It - - 68 -68 4.0 -
9 Born To Master - 59 68 -9 4.0 -
10 Born Of Fire - 70 68 +2 4.0 -
11 Undoubted The Boy - 54 68 -14 4.0 -
12 Musical Sword - - 60 -60 4.0 -
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