Official NHA Assessment

Race 7: GALLOP TV B STAKES (For All Horses with a nett rating of 101 & below)

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Line Horse
Trois Trois Quatre
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
4 / 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    Lock And Key         2    59.0    1    0.00     0.0   99    85           85    -14
2    Trois Trois Quatre   5    60.0    2    0.40     0.0   92    92           92    +0
3    French Trip          4    54.0    3    0.90     0.5   81    78           78    -3
4    View Of The World    3    57.0    4    1.30     1.5   88    81           81    -7
5    Hat's Pride          2    60.0    5    1.40     0.0   91    90           90    -1
6    Tirpitz              6    57.0    6    2.15     0.0   87    84           84    -3
7    Dancing On A Cloud   3    54.0    7    6.45     1.5   83    72           73    -10
99   Royal Invitation     5    56.0    99   0.00     0.0   -     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 Lock And Key 99 94 85 +9 0.0 -
2 Trois Trois Quatre Line 92 87 92 -5 0.0
3 French Trip 81 88 78 +10 0.5 -
4 View Of The World 88 78 81 -3 1.5 -
5 Hat's Pride 91 97 90 +7 0.0 -
6 Tirpitz 87 82 84 -2 0.0 -
7 Dancing On A Cloud 83 70 73 -3 1.5 -
99 Royal Invitation - 99 79 +20 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