Official NHA Assessment

Race 5: BLUE SKY THOROUGHBREDS KWAZULU-NATAL BREEDERS 1900 (For all KZN Breeders Series Qualifying Horses (Non-Blk Type))

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Line Horse
Victory Twist
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 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    The Kop              4    60.0    1    0.00     1.0   85    80           80    -5
2    Aquae Sulis          5    57.5    2    0.05     0.0   87    77           77    -10
3    Have A Go Jo         4    58.0    3    1.10     1.0   80    82           82    +2
4    Victory Twist        4    58.0    4    1.80     1.0   81    81           81    +0
5    Hey Bill             4    57.0    5    2.70     1.0   66    78           78    +12
6    Pewter Sky           3    57.0    6    2.75     2.0   70    75           75    +5
6    Princess Kesh        3    55.5    6    2.75     2.0   84    72           74    -10
8    Etiquette            3    57.0    8    3.45     2.0   82    75           75    -7
9    Teichman             5    57.0    9    4.65     0.0   62    77           77    +15
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Kop 85 78 80 -2 1.0 -
2 Aquae Sulis 87 69 77 -8 0.0 -
3 Have A Go Jo 80 70 82 -12 1.0 -
4 Victory Twist Line 81 80 81 -1 1.0
5 Hey Bill 66 71 78 -7 1.0 -
6 Pewter Sky 70 71 75 -4 2.0 -
6 Princess Kesh 84 77 74 +3 2.0 -
8 Etiquette 82 83 75 +8 2.0 -
9 Teichman 62 73 77 -4 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