Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Bilingual
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
7 / 11
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    My One And Only      3    57.5    1    0.00     7.5   -     62           6     +6
2    Bilingual            4    60.0    2    3.00     9.0   64    64           64    +0
2    Chilli Marmalade     5    60.0    2    3.00     0.0   63    82           82    +19
4    Flying Solo          3    59.0    4    6.00     7.5   -     65           65    +65
5    Panthera Uncia       3    59.0    5    6.10     7.5   80    65           70    -10
6    Blazing Beauty       3    59.0    6    8.10     7.5   -     65           65    +65
7    Black Hole Sun       4    60.0    7    8.60     9.0   59    64           64    +5
8    Q For Love           3    59.0    8    10.35    7.5   -     65           65    +65
9    Marieskop            3    60.0    9    12.05    7.5   53    67           67    +14
10   Magic Bank           2    60.0    10   12.80    5.0   27    72           72    +45
11   Captains Clover      2    59.0    11   13.50    5.0   59    70           70    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My One And Only - 82 6 +76 7.5 -
2 Bilingual Line 64 60 64 -4 9.0
2 Chilli Marmalade 63 48 82 -34 0.0 -
4 Flying Solo - 66 65 +1 7.5 -
5 Panthera Uncia 80 60 70 -10 7.5 -
6 Blazing Beauty - 68 65 +3 7.5 -
7 Black Hole Sun 59 53 64 -11 9.0 -
8 Q For Love - 60 65 -5 7.5 -
9 Marieskop 53 50 67 -17 7.5 -
10 Magic Bank 27 42 72 -30 5.0 -
11 Captains Clover 59 54 70 -16 5.0 -
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