Official NHA Assessment

Race 3: WSB LIVE ROULETTE MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Portrayal
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
12 / 13
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    Portrayal            3    60.0    1    0.00     4.5   73    73           73    +0
2    Chyavana             3    60.0    2    0.10     4.5   -     73           73    +73
3    Jp Two Thousand      3    58.5    3    0.25     4.5   70    70           70    +0
4    Bevoeterd            3    60.0    4    3.00     4.5   68    73           73    +5
5    Eagle River          3    60.0    5    4.25     4.5   76    73           73    -3
6    Knave Of Diamonds    3    60.0    6    4.50     4.5   -     73           73    +73
7    Knock Twice          3    60.0    7    5.00     4.5   -     73           73    +73
8    Broadway             4    60.0    8    10.00    5.0   55    72           72    +17
9    Fill Your Boots      3    60.0    9    10.75    4.5   49    73           73    +24
10   Gone In Time         3    60.0    10   10.80    4.5   59    73           73    +14
11   Pianta               4    57.5    11   10.85    5.0   57    67           67    +10
12   That's A Fact        3    60.0    12   13.25    4.5   -     73           73    +73
99   Phantomoftheforest   3    60.0    99   0.00     4.5   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Portrayal Line 73 73 73 ✓ Match 4.5
2 Chyavana - 106 73 +33 4.5 -
3 Jp Two Thousand 70 61 70 -9 4.5 -
4 Bevoeterd 68 58 73 -15 4.5 -
5 Eagle River 76 66 73 -7 4.5 -
6 Knave Of Diamonds - 57 73 -16 4.5 -
7 Knock Twice - 55 73 -18 4.5 -
8 Broadway 55 59 72 -13 5.0 -
9 Fill Your Boots 49 57 73 -16 4.5 -
10 Gone In Time 59 54 73 -19 4.5 -
11 Pianta 57 60 67 -7 5.0 -
12 That's A Fact - 53 73 -20 4.5 -
99 Phantomoftheforest - 50 73 -23 4.5 -
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