Official NHA Assessment

Race 1: 4RACING WELCOMES WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Voshaarnooi
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 10
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    Rosy Lemon           5    59.0    1    0.00     0.0   71    63           63    -8
2    Bushveld             3    59.0    2    0.50     6.0   -     56           56    +56
3    Impersonation        3    59.0    3    4.75     6.0   -     51           51    +51
4    Elusive Fire         4    60.0    4    9.50     3.0   -     59           59    +59
5    Inner Sense          2    59.0    5    10.00    0.0   72    63           63    -9
6    Voshaarnooi          2    59.0    6    13.75    0.0   63    63           63    +0
7    Lady Zultanite       3    59.0    7    15.25    6.0   -     51           51    +51
8    Ragsaa               3    59.0    8    16.75    6.0   -     51           51    +51
9    Mrs Shelby           2    59.0    9    17.25    0.0   57    63           63    +6
10   Last Wild One        3    59.0    10   99.99    6.0   78    51           68    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rosy Lemon 71 72 63 +9 0.0 -
2 Bushveld - 56 56 ✓ Match 6.0 -
3 Impersonation - 68 51 +17 6.0 -
4 Elusive Fire - 63 59 +4 3.0 -
5 Inner Sense 72 59 63 -4 0.0 -
6 Voshaarnooi Line 63 50 63 -13 0.0
7 Lady Zultanite - 66 51 +15 6.0 -
8 Ragsaa - 62 51 +11 6.0 -
9 Mrs Shelby 57 50 63 -13 0.0 -
10 Last Wild One 78 78 68 +10 6.0 -
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