Official NHA Assessment

Race 9: NEXT TURFFONTEIN RACEMEETING THURSDAY 29 FEBRUARY FM 86 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Nettleton
Reference for assessment
Exact Matches
0 / 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    Law Of Success       3    53.0    1    0.00     4.5   72    72           72    +0
2    Nettleton            3    56.5    2    2.00     4.5   79    79           79    +0
3    White Hills          2    57.0    3    2.25     3.0   86    83           83    -3
4    Articuno             2    54.5    4    2.50     3.0   81    78           78    -3
5    Work Of Time         2    55.5    5    2.75     3.0   83    80           80    -3
6    There She Goes       6    56.0    6    5.00     0.0   86    87           87    +1
7    Wings Of Nike        6    53.0    7    6.50     0.0   72    81           81    +9
8    Virginia Beach       2    59.0    8    7.70     3.0   90    87           87    -3
9    Women Of Fame        2    55.5    9    8.50     3.0   83    80           80    -3
10   National Star        2    58.0    10   10.50    3.0   82    85           85    +3
99   Happy Analia         4    55.0    99   0.00     5.0   -     75           75    +0
99   Virgin River         5    57.0    99   0.00     0.0   -     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 Law Of Success 72 81 72 +9 4.5 -
2 Nettleton Line 79 100 79 +21 4.5
3 White Hills 86 66 83 -17 3.0 -
4 Articuno 81 80 78 +2 3.0 -
5 Work Of Time 83 75 80 -5 3.0 -
6 There She Goes 86 77 87 -10 0.0 -
7 Wings Of Nike 72 68 81 -13 0.0 -
8 Virginia Beach 90 82 87 -5 3.0 -
9 Women Of Fame 83 79 80 -1 3.0 -
10 National Star 82 75 85 -10 3.0 -
99 Happy Analia - 78 75 +3 5.0 -
99 Virgin River - 95 89 +6 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