Official NHA Assessment

Race 4: www.tabgold.co.za FM 74 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Spring Kiss
Reference for assessment
Exact Matches
0 / 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    Gardenia             5    59.5    1    0.00     0.0   73    78           73    +0
2    Spring Kiss          3    59.0    2    2.10     2.0   76    76           76    +0
3    Fields Of Green      2    56.5    3    2.90     0.0   71    74           74    +3
4    Imperious Destiny    3    59.0    4    4.60     2.0   76    73           73    -3
5    Duchess Of Gold      2    56.0    5    4.65     0.0   70    71           71    +1
6    Im The Buzz          5    57.5    6    5.85     0.0   73    74           74    +1
7    Umhlali              2    56.0    7    13.75    0.0   73    71           71    -2
8    Luna Eclipse         4    60.5    8    99.99    0.5   78    79           79    +1
99   Perfect Trust        7    58.5    99   0.00     0.0   -     76           76    +0
99   Crazy Blues          3    62.0    99   0.00     2.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gardenia 73 75 73 +2 0.0 -
2 Spring Kiss Line 76 64 76 -12 2.0
3 Fields Of Green 71 69 74 -5 0.0 -
4 Imperious Destiny 76 85 73 +12 2.0 -
5 Duchess Of Gold 70 62 71 -9 0.0 -
6 Im The Buzz 73 68 74 -6 0.0 -
7 Umhlali 73 67 71 -4 0.0 -
8 Luna Eclipse 78 78 79 -1 0.5 -
99 Perfect Trust - 50 76 -26 0.0 -
99 Crazy Blues - 78 79 -1 2.0 -
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