Official NHA Assessment

Race 5: BET WITH COLOSSUS EXCLUSIVE ON www.tote.co.za D STAKES (For All Horses)

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Line Horse
Trafalgar Square
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 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    Axis Power           3    61.5    1    0.00     5.0   66    61           61    -5
2    Trafalgar Square     6    60.5    2    0.30     0.0   69    69           69    +0
3    Catavar              4    62.0    3    0.55     6.0   67    60           60    -7
4    Purple Powahouse     8    57.0    4    0.95     0.0   57    62           62    +5
5    Gorgeous Bomb        3    57.5    5    1.00     5.0   62    53           53    -9
5    Ndaka                3    58.5    5    1.00     5.0   61    55           55    -6
7    Cappellino           3    58.5    7    1.30     5.0   58    55           55    -3
8    Kaapse Klopse        2    58.5    8    1.70     3.5   58    58           58    +0
9    Barry Du Grond       3    62.0    9    2.20     5.0   67    62           62    -5
10   Grand Force          3    57.5    10   3.20     5.0   66    53           56    -10
11   Jane's Vision        2    56.5    11   5.70     3.5   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 Axis Power 66 68 61 +7 5.0 -
2 Trafalgar Square Line 69 69 69 ✓ Match 0.0
3 Catavar 67 64 60 +4 6.0 -
4 Purple Powahouse 57 55 62 -7 0.0 -
5 Gorgeous Bomb 62 62 53 +9 5.0 -
5 Ndaka 61 61 55 +6 5.0 -
7 Cappellino 58 61 55 +6 5.0 -
8 Kaapse Klopse 58 60 58 +2 3.5 -
9 Barry Du Grond 67 67 62 +5 5.0 -
10 Grand Force 66 54 56 -2 5.0 -
11 Jane's Vision 65 65 55 +10 3.5 -
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