Official NHA Assessment

Race 4: WSB 24/7 Customer Support MAIDEN PLATE (For all Maidens)

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Line Horse
Clean Slate
Reference for assessment
Exact Matches
0 / 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    Red Sole             3    60.0    1    0.00     2.5   73    67           67    -6
2    In The Summertime    3    60.0    2    3.50     2.5   -     68           68    +68
3    Clean Slate          3    60.0    3    4.40     2.5   67    67           67    +0
4    Death Blow           4    60.0    4    7.40     1.0   59    70           70    +11
5    Brave Voyager        3    60.0    5    9.10     2.5   -     67           67    +67
6    Rare Flag            3    60.0    6    11.30    2.5   55    67           67    +12
7    Ixopo                3    57.5    7    12.00    2.5   46    62           62    +16
8    Anotherdayinafrica   6    60.0    8    24.80    0.0   -     72           72    +72
9    Willy The Wizzard    4    60.0    9    27.00    1.0   62    70           70    +8
99   Specially Selected   3    60.0    99   0.00     2.5   -     67           67    +0
99   Flute                3    60.0    99   0.00     2.5   -     67           67    +0
99   Ladooshka            4    60.0    99   0.00     1.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Red Sole 73 68 67 +1 2.5 -
2 In The Summertime - 66 68 -2 2.5 -
3 Clean Slate Line 67 70 67 +3 2.5
4 Death Blow 59 52 70 -18 1.0 -
5 Brave Voyager - 51 67 -16 2.5 -
6 Rare Flag 55 54 67 -13 2.5 -
7 Ixopo 46 49 62 -13 2.5 -
8 Anotherdayinafrica - 49 72 -23 0.0 -
9 Willy The Wizzard 62 62 70 -8 1.0 -
99 Specially Selected - 72 67 +5 2.5 -
99 Flute - 61 67 -6 2.5 -
99 Ladooshka - 52 70 -18 1.0 -
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