Official NHA Assessment

Race 10: NEXT TURFFONTEIN RACEMEETING SATURDAY 5 NOVEMBER MR 105 HANDICAP (Open)

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Line Horse
Castletown
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 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    Another Level        3    53.5    1    0.00     8.0   93    91           93    +0
2    Vanderbilt           3    56.0    2    1.25     8.0   98    100          100   +2
3    Sudden Star          5    55.0    3    3.00     0.0   95    112          112   +17
4    Castletown           3    60.0    4    3.05     8.0   106   106          106   +0
5    Cornish Pomodoro     5    61.0    5    3.75     0.0   107   123          123   +16
6    Imperial Master      4    53.0    6    4.50     5.0   91    96           96    +5
7    Bard Of Avon         3    56.0    7    6.75     8.0   98    96           96    -2
8    Back To Black        4    53.0    8    6.80     5.0   91    96           96    +5
9    Sovereign Spirit     6    64.0    9    7.25     0.0   113   128          128   +15
10   Ultra Magnus         6    60.0    10   99.99    0.0   105   120          120   +15
99   ExpressFromTheUS     5    56.5    99   0.00     0.0   -     113          113   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Another Level 93 86 93 -7 8.0 -
2 Vanderbilt 98 103 100 +3 8.0 -
3 Sudden Star 95 86 112 -26 0.0 -
4 Castletown Line 106 90 106 -16 8.0
5 Cornish Pomodoro 107 107 123 -16 0.0 -
6 Imperial Master 91 90 96 -6 5.0 -
7 Bard Of Avon 98 105 96 +9 8.0 -
8 Back To Black 91 89 96 -7 5.0 -
9 Sovereign Spirit 113 106 128 -22 0.0 -
10 Ultra Magnus 105 98 120 -22 0.0 -
99 ExpressFromTheUS - 98 113 -15 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