Official NHA Assessment

Race 9: NEXT TURFFONTEIN RACEMEETING SATURDAY 23 AUGUST GRADUATION PLATE (For Maidens, 1 & 2 Time Winners)

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Line Horse
Rodeo Drive
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 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    Rodeo Drive          2    57.5    1    0.00     7.0   103   103          103   +0
2    Nyaka Nyaka          2    55.0    2    1.60     7.0   91    98           98    +7
3    Bjorn Ironside       2    57.0    3    1.80     7.0   108   102          102   -6
4    Frozen Fantasy       3    57.0    4    3.20     10.5  107   95           97    -10
5    Prince Of Kildare    4    60.0    5    3.90     12.0  69    98           98    +29
6    Bakwena              3    54.5    6    5.10     10.5  95    90           90    -5
7    Vulcanite            2    57.0    7    7.10     7.0   102   102          102   +0
99   Sylvan Warrior       2    57.5    99   0.00     7.0   -     103          103   +0
99   William West         2    56.0    99   0.00     7.0   -     100          100   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rodeo Drive Line 103 113 103 +10 7.0
2 Nyaka Nyaka 91 101 98 +3 7.0 -
3 Bjorn Ironside 108 105 102 +3 7.0 -
4 Frozen Fantasy 107 98 97 +1 10.5 -
5 Prince Of Kildare 69 80 98 -18 12.0 -
6 Bakwena 95 97 90 +7 10.5 -
7 Vulcanite 102 100 102 -2 7.0 -
99 Sylvan Warrior - 101 103 -2 7.0 -
99 William West - 51 100 -49 7.0 -
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