Official NHA Assessment

Race 6: 4RACING THANKS AND APPRECIATES BRETT WARREN MR 96 HANDICAP (Open)

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Line Horse
Bob's Your Uncle
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
5 / 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    Imperial Master      4    55.0    1    0.00     7.0   86    70           86    +0
2    Supreme Dance        4    56.5    2    0.90     7.0   89    77           79    -10
3    Bob's Your Uncle     5    53.5    3    1.25     0.0   85    85           85    +0
4    Twin Turbo           4    55.5    4    1.45     7.0   87    74           77    -10
5    The Kop              4    53.5    5    3.00     7.0   88    69           78    -10
6    River Romeo          2    62.0    6    3.05     0.0   102   100          100   -2
7    Top Sail             2    59.0    7    3.25     0.0   96    94           94    -2
8    African Torrent      2    52.5    8    4.25     0.0   83    80           80    -3
9    Opera Glass          4    56.5    9    5.50     7.0   88    73           78    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Imperial Master 86 90 86 +4 7.0 -
2 Supreme Dance 89 76 79 -3 7.0 -
3 Bob's Your Uncle Line 85 103 85 +18 0.0
4 Twin Turbo 87 88 77 +11 7.0 -
5 The Kop 88 78 78 ✓ Match 7.0 -
6 River Romeo 102 94 100 -6 0.0 -
7 Top Sail 96 85 94 -9 0.0 -
8 African Torrent 83 68 80 -12 0.0 -
9 Opera Glass 88 81 78 +3 7.0 -
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