Official NHA Assessment

Race 7: CLIFTON STUD KWAZULU-NATAL BREEDERS 1200 (For all KZN Breeders Series Qualifying Horses (Non-Blk Type))

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Line Horse
Silver Tudor
Reference for assessment
Exact Matches
2 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
7 / 12
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    Tara Star            4    54.5    1    0.00     2.5   85    81           81    -4
2    Silver Tudor         5    59.0    2    0.50     0.0   95    95           95    +0
3    Teriyaki             4    54.0    3    1.80     2.5   72    80           80    +8
4    Proud Master         3    62.0    4    2.10     2.0   102   97           97    -5
5    Disting              2    56.5    5    2.30     1.0   96    88           88    -8
6    Agrado               3    56.0    6    2.90     2.0   85    85           85    +0
7    Kalahari Roller      3    58.0    7    4.10     2.0   90    89           89    -1
8    Firelighter          3    53.0    8    5.60     2.0   73    79           79    +6
9    Skytrix              3    51.5    9    7.00     2.0   75    76           76    +1
10   Luneluck             2    57.0    10   7.05     1.0   87    89           89    +2
11   Acacia's Blossom     2    54.5    11   9.05     1.0   87    84           84    -3
99   Mr Henley            2    57.0    99   0.00     1.0   -     89           89    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tara Star 85 96 81 +15 2.5 -
2 Silver Tudor Line 95 99 95 +4 0.0
3 Teriyaki 72 71 80 -9 2.5 -
4 Proud Master 102 97 97 ✓ Match 2.0 -
5 Disting 96 96 88 +8 1.0 -
6 Agrado 85 85 85 ✓ Match 2.0 -
7 Kalahari Roller 90 86 89 -3 2.0 -
8 Firelighter 73 63 79 -16 2.0 -
9 Skytrix 75 71 76 -5 2.0 -
10 Luneluck 87 82 89 -7 1.0 -
11 Acacia's Blossom 87 66 84 -18 1.0 -
99 Mr Henley - 82 89 -7 1.0 -
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