Official NHA Assessment

Race 5: www.goldcircle.co.za FM 66 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Shell Seeker
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
10 / 13
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    Fort J'adore         3    57.0    1    0.00     8.5   61    56           61    +0
2    Umhlali              2    58.5    2    0.75     0.0   67    80           80    +13
3    Shell Seeker         3    57.0    3    0.90     8.5   60    60           60    +0
4    Miss Lialah          4    55.0    4    2.50     6.0   56    59           59    +3
5    Drive By             6    56.5    5    3.00     0.0   59    74           74    +15
6    Quanabi              2    60.5    6    3.90     0.0   68    81           81    +13
7    Angelic Fort         3    58.0    7    3.95     8.5   62    59           59    -3
8    Fashion Mistress     3    59.5    8    4.85     8.5   66    61           61    -5
9    Edvige               3    57.0    9    4.90     8.5   60    56           56    -4
10   Efficient Trader     2    57.5    10   4.95     0.0   62    74           74    +12
10   Stealth Attack       2    61.0    10   4.95     0.0   69    81           81    +12
12   Spirited Flight      5    60.0    12   6.25     0.0   67    79           79    +12
99   Daddy's Jet          3    57.0    99   0.00     8.5   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fort J'adore 61 67 61 +6 8.5 -
2 Umhlali 67 67 80 -13 0.0 -
3 Shell Seeker Line 60 62 60 +2 8.5
4 Miss Lialah 56 65 59 +6 6.0 -
5 Drive By 59 68 74 -6 0.0 -
6 Quanabi 68 70 81 -11 0.0 -
7 Angelic Fort 62 50 59 -9 8.5 -
8 Fashion Mistress 66 56 61 -5 8.5 -
9 Edvige 60 50 56 -6 8.5 -
10 Efficient Trader 62 57 74 -17 0.0 -
10 Stealth Attack 69 52 81 -29 0.0 -
12 Spirited Flight 67 61 79 -18 0.0 -
99 Daddy's Jet - 60 56 +4 8.5 -
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