Official NHA Assessment

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

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Line Horse
Royal Port Louis
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
8 / 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    Terminator           4    60.0    1    0.00     5.0   70    58           58    -12
2    Bounceback           2    57.0    2    0.30     0.0   -     67           67    +67
3    King's Quest         3    57.0    3    0.35     8.0   -     51           51    +51
4    Royal Port Louis     2    60.0    4    3.10     0.0   70    70           70    +0
5    Mr Belvedere         4    60.0    5    4.10     5.0   76    59           66    -10
6    Chief Runner         3    57.0    6    4.85     8.0   -     46           46    +46
7    Summer Snow          2    57.0    7    7.10     0.0   84    62           74    -10
8    Henry's Hedge        3    57.0    8    8.60     8.0   -     46           46    +46
9    World Soprano        2    57.0    9    10.85    0.0   -     62           62    +62
10   Green Okra           2    57.0    10   13.85    0.0   77    62           67    -10
11   Lights On            3    57.0    11   18.10    8.0   -     46           46    +46
99   War Hawk             3    57.0    99   0.00     8.0   -     46           46    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Terminator 70 86 58 +28 5.0 -
2 Bounceback - 80 67 +13 0.0 -
3 King's Quest - 89 51 +38 8.0 -
4 Royal Port Louis Line 70 70 70 ✓ Match 0.0
5 Mr Belvedere 76 55 66 -11 5.0 -
6 Chief Runner - 59 46 +13 8.0 -
7 Summer Snow 84 79 74 +5 0.0 -
8 Henry's Hedge - 75 46 +29 8.0 -
9 World Soprano - 65 62 +3 0.0 -
10 Green Okra 77 66 67 -1 0.0 -
11 Lights On - 63 46 +17 8.0 -
99 War Hawk - 75 46 +29 8.0 -
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