Official NHA Assessment

Race 3: www.tabgold.co.za FM 84 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Rotunda
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
4 / 10
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    Snow Palace          5    59.5    1    0.00     0.0   83    88           83    +0
2    Rotunda              3    55.0    2    0.30     2.5   79    79           79    +0
3    Greengrowthelilacs   3    53.5    3    2.30     2.5   76    73           73    -3
4    Bella Swan           3    56.0    4    4.40     2.5   81    76           76    -5
5    Electric Surge       5    55.0    5    7.50     0.0   74    79           79    +5
6    French Declaration   4    59.5    6    7.80     1.0   83    86           86    +3
7    Alfonse Baby         5    54.0    7    9.40     0.0   75    77           77    +2
8    Jackson Wells        5    59.5    8    10.50    0.0   83    88           88    +5
9    Blue Sails           3    55.0    9    14.40    2.5   79    74           74    -5
99   Top Me Up Holly      4    59.5    99   0.00     1.0   -     86           86    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Snow Palace 83 87 83 +4 0.0 -
2 Rotunda Line 79 83 79 +4 2.5
3 Greengrowthelilacs 76 79 73 +6 2.5 -
4 Bella Swan 81 71 76 -5 2.5 -
5 Electric Surge 74 83 79 +4 0.0 -
6 French Declaration (AUS) 83 82 86 -4 1.0 -
7 Alfonse Baby 75 69 77 -8 0.0 -
8 Jackson Wells 83 76 88 -12 0.0 -
9 Blue Sails 79 79 74 +5 2.5 -
99 Top Me Up Holly - 98 86 +12 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