Official NHA Assessment

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

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Line Horse
Petit Verdot
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 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    Willow's Wish        4    59.0    1    0.00     1.0   91    83           83    -8
2    Etiquette            3    57.0    2    3.60     2.0   82    80           80    -2
3    African Dusk         5    55.0    3    3.90     0.0   74    79           79    +5
4    Pirate Prince        2    60.0    4    3.95     0.0   92    89           89    -3
5    Petit Verdot         2    52.5    5    4.15     0.0   74    74           74    +0
6    Magical Flight       4    55.5    6    4.55     1.0   86    77           77    -9
7    Linganomore          3    50.0    7    5.15     2.0   63    63           63    +0
8    Lucretius            6    53.0    8    8.25     0.0   65    73           73    +8
9    Tom's Act            3    52.0    9    11.45    2.0   60    67           67    +7
10   Sea Goddess          3    54.5    10   11.75    2.0   81    72           72    -9
11   Mysterious Girl      2    51.5    11   11.85    0.0   69    70           70    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Willow's Wish 91 96 83 +13 1.0 -
2 Etiquette 82 83 80 +3 2.0 -
3 African Dusk 74 83 79 +4 0.0 -
4 Pirate Prince 92 94 89 +5 0.0 -
5 Petit Verdot Line 74 75 74 +1 0.0
6 Magical Flight 86 85 77 +8 1.0 -
7 Linganomore 63 73 63 +10 2.0 -
8 Lucretius 65 64 73 -9 0.0 -
9 Tom's Act 60 64 67 -3 2.0 -
10 Sea Goddess 81 80 72 +8 2.0 -
11 Mysterious Girl 69 69 70 -1 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