Official NHA Assessment

Race 8: WALTER FAIRRALL MR 69 HANDICAP (Open)

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Line Horse
Trafalgar Square
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
6 / 11
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    Philispiel           7    57.0    1    0.00     0.0   66    63           66    +0
2    Movie Magic          6    53.0    2    1.80     0.0   55    55           55    +0
3    Trafalgar Square     6    60.0    3    3.60     0.0   69    69           69    +0
4    Quest For The Best   4    49.5    4    3.70     7.0   53    34           43    -10
5    Gunsmoke             3    55.5    5    5.00     6.0   60    48           50    -10
6    Happy Wanderer       5    54.0    6    7.10     0.0   57    57           57    +0
7    Mask On              3    53.0    7    8.80     6.0   63    43           53    -10
8    Ndaka                3    57.5    8    9.50     6.0   64    52           54    -10
99   Captain Dizzy        4    60.0    99   0.00     7.0   -     55           55    +0
99   Beckoning Beauty     4    58.5    99   0.00     7.0   -     52           52    +0
99   Lebanese Pound       2    61.0    99   0.00     4.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Philispiel 66 70 66 +4 0.0 -
2 Movie Magic 55 56 55 +1 0.0 -
3 Trafalgar Square Line 69 69 69 ✓ Match 0.0
4 Quest For The Best 53 76 43 +33 7.0 -
5 Gunsmoke 60 68 50 +18 6.0 -
6 Happy Wanderer 57 55 57 -2 0.0 -
7 Mask On 63 52 53 -1 6.0 -
8 Ndaka 64 61 54 +7 6.0 -
99 Captain Dizzy - 96 55 +41 7.0 -
99 Beckoning Beauty - 75 52 +23 7.0 -
99 Lebanese Pound - 48 63 -15 4.0 -
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