Official NHA Assessment

Race 3: www.tabgold.co.za FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Sleek As Silk
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 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    Ice Sunsation        6    60.5    1    0.00     0.0   81    86           81    +0
2    Grandi Orecchie      2    56.0    2    2.00     0.0   79    80           80    +1
3    Sleek As Silk        2    56.0    3    2.30     0.0   79    79           79    +0
4    Rockie Reef          3    56.5    4    2.45     3.5   73    73           73    +0
5    Escapologist         5    55.5    5    4.15     0.0   78    77           77    -1
6    Mel's Princess       3    58.0    6    4.75     3.5   79    74           74    -5
7    Maria Corolina       4    60.5    7    5.00     1.5   81    83           83    +2
8    Duchess Of Gold      2    53.0    8    5.60     0.0   73    71           71    -2
9    Family Favourite     3    60.5    9    8.00     3.5   81    79           79    -2
99   Quiet Rebellion      3    58.0    99   0.00     3.5   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ice Sunsation 81 90 81 +9 0.0 -
2 Grandi Orecchie 79 85 80 +5 0.0 -
3 Sleek As Silk Line 79 87 79 +8 0.0
4 Rockie Reef 73 97 73 +24 3.5 -
5 Escapologist 78 77 77 ✓ Match 0.0 -
6 Mel's Princess 79 77 74 +3 3.5 -
7 Maria Corolina 81 81 83 -2 1.5 -
8 Duchess Of Gold 73 62 71 -9 0.0 -
9 Family Favourite 81 69 79 -10 3.5 -
99 Quiet Rebellion - 74 74 ✓ Match 3.5 -
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