Official NHA Assessment

Race 8: WSB SLOTS WITH THE BEST D STAKES (For All Horses)

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Line Horse
Trafalgar Square
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    Arverni Princess     2    59.5    1    0.00     2.0   67    58           58    -9
2    Cappellino           3    60.0    2    1.90     3.0   61    57           57    -4
3    Bless Me Fred        6    56.0    3    2.30     0.0   62    55           55    -7
4    Trafalgar Square     6    63.0    4    3.10     0.0   69    69           69    +0
5    Grand Force          3    51.5    5    3.70     3.0   54    40           44    -10
6    Professor Lupin      4    62.0    6    4.00     3.5   67    60           60    -7
7    Poetic Princess      3    57.5    7    5.80     3.0   61    52           52    -9
8    Sovereign Gem        3    61.5    8    6.00     3.0   75    60           65    -10
9    Jane's Vision        2    57.5    9    6.70     2.0   65    54           55    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arverni Princess 67 71 58 +13 2.0 -
2 Cappellino 61 61 57 +4 3.0 -
3 Bless Me Fred 62 62 55 +7 0.0 -
4 Trafalgar Square Line 69 69 69 ✓ Match 0.0
5 Grand Force 54 54 44 +10 3.0 -
6 Professor Lupin 67 67 60 +7 3.5 -
7 Poetic Princess 61 59 52 +7 3.0 -
8 Sovereign Gem 75 72 65 +7 3.0 -
9 Jane's Vision 65 65 55 +10 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