Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Chabal
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 9
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    Chabal               3    59.0    1    0.00     6.0   75    75           75    +0
2    Gift Of Royal        3    59.0    2    0.70     6.0   72    80           80    +8
3    Sovereign Crown      3    59.5    3    3.40     6.0   66    77           77    +11
4    Chief Of Staff       3    60.0    4    4.60     6.0   50    77           77    +27
5    Gold De Grace        4    60.0    5    5.80     3.0   57    83           83    +26
6    Parabellum           3    59.0    6    7.20     6.0   -     75           75    +75
7    Knight's Fire        3    59.0    7    8.40     6.0   -     75           75    +75
8    Fizzly Bubbly        3    57.5    8    9.50     6.0   -     72           72    +72
9    King Beijing         5    60.0    9    15.00    0.0   -     89           89    +89
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chabal Line 75 73 75 -2 6.0
2 Gift Of Royal 72 58 80 -22 6.0 -
3 Sovereign Crown 66 68 77 -9 6.0 -
4 Chief Of Staff 50 58 77 -19 6.0 -
5 Gold De Grace 57 51 83 -32 3.0 -
6 Parabellum - 61 75 -14 6.0 -
7 Knight's Fire - 60 75 -15 6.0 -
8 Fizzly Bubbly - 70 72 -2 6.0 -
9 King Beijing - 37 89 -52 0.0 -
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