Official NHA Assessment

Race 4: RACING240 FOR RACING. FOR YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Obsidian
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
9 / 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    Obsidian             3    60.0    1    0.00     2.5   79    79           79    +0
2    Saudi Sweep          3    57.0    2    2.50     2.5   76    75           75    -1
3    Afterburn            3    60.0    3    2.90     2.5   66    81           81    +15
4    Inclusion            3    57.5    4    3.30     2.5   -     75           75    +75
5    Future King          3    60.0    5    5.80     2.5   -     79           79    +79
6    Knight's Fire        3    60.0    6    7.10     2.5   55    79           79    +24
7    Canford Club         3    60.0    7    17.30    2.5   -     79           79    +79
99   Beartic              3    60.0    99   0.00     2.5   -     79           79    +0
99   Dylan's Champ        3    60.0    99   0.00     2.5   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Obsidian Line 79 97 79 +18 2.5
2 Saudi Sweep 76 68 75 -7 2.5 -
3 Afterburn 66 62 81 -19 2.5 -
4 Inclusion - 65 75 -10 2.5 -
5 Future King - 66 79 -13 2.5 -
6 Knight's Fire 55 60 79 -19 2.5 -
7 Canford Club - - 79 -79 2.5 -
99 Beartic - 54 79 -25 2.5 -
99 Dylan's Champ - 87 79 +8 2.5 -
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