Official NHA Assessment

Race 1: MUSTARD & KNOESEN WORK RIDERS HANDICAP (Open)

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Line Horse
Knight Warrior
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
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    Tribute To You       4    59.5    1    0.00     2.0   74    67           74    +0
2    Purple Powahouse     8    57.0    2    5.00     0.0   64    66           66    +2
3    Knight Warrior       5    64.0    3    5.05     0.0   80    80           80    +0
4    Servilius            3    59.0    4    5.65     1.5   71    67           67    -4
5    Anotherdayinafrica   6    57.0    5    7.55     0.0   56    66           66    +10
6    Trade War            3    59.0    6    10.35    1.5   73    67           67    -6
99   We All Chomies       5    57.0    99   0.00     0.0   -     66           66    +0
99   Quest For The Best   4    62.5    99   0.00     2.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tribute To You 74 90 74 +16 2.0 -
2 Purple Powahouse 64 55 66 -11 0.0 -
3 Knight Warrior Line 80 74 80 -6 0.0
4 Servilius 71 65 67 -2 1.5 -
5 Anotherdayinafrica 56 49 66 -17 0.0 -
6 Trade War 73 70 67 +3 1.5 -
99 We All Chomies - 54 66 -12 0.0 -
99 Quest For The Best - 76 73 +3 2.0 -
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