Official NHA Assessment

Race 4: WILGERBOSDRIFT PINNACLE STAKES (Open)

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Line Horse
Good Council
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
4 / 7
Within 2 points
Significant Diffs
3 / 7
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    Zeus                 3    60.0    1    0.00     6.0   117   103          103   -14
2    Good Council         2    54.0    2    3.50     0.0   105   105          105   +0
3    Breeze Over          5    52.0    3    4.00     0.0   93    101          101   +8
4    Second Base          4    56.0    4    5.00     3.0   109   101          101   -8
5    East Coast           5    54.0    5    5.50     0.0   105   103          103   -2
6    Out Of Your League   5    52.0    6    12.50    0.0   77    99           99    +22
99   Youcanthurrylove     5    52.0    99   0.00     0.0   -     99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Zeus 117 117 103 +14 6.0 -
2 Good Council Line 105 104 105 -1 0.0
3 Breeze Over 93 99 101 -2 0.0 -
4 Second Base 109 99 101 -2 3.0 -
5 East Coast 105 102 103 -1 0.0 -
6 Out Of Your League 77 77 99 -22 0.0 -
99 Youcanthurrylove - 86 99 -13 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