Official NHA Assessment

Race 6: ONLINE FORM GUIDE www.gallop.co.za CLASS 5 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 66)

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Line Horse
Silky Jet
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 9
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    Fireburst            3    61.5    1    0.00     2.5   74    65           65    -9
2    Zena Rose            3    58.5    2    0.15     2.5   76    59           66    -10
3    Angel Of My Heart    3    57.0    3    1.45     2.5   60    59           59    -1
4    Silky Jet            4    59.0    4    4.15     1.0   64    64           64    +0
5    Lady My Lady         3    62.0    5    4.85     2.5   70    66           66    -4
6    Mistress Rebecca     3    58.0    6    8.15     2.5   67    58           58    -9
7    Thesupernovastar     3    53.0    7    12.25    2.5   60    48           50    -10
99   Flying Reign Storm   3    59.0    99   0.00     2.5   -     60           60    +0
99   English Primrose     3    57.0    99   0.00     2.5   -     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 Fireburst 74 80 65 +15 2.5 -
2 Zena Rose 76 73 66 +7 2.5 -
3 Angel Of My Heart 60 51 59 -8 2.5 -
4 Silky Jet Line 64 61 64 -3 1.0
5 Lady My Lady 70 64 66 -2 2.5 -
6 Mistress Rebecca 67 62 58 +4 2.5 -
7 Thesupernovastar 60 56 50 +6 2.5 -
99 Flying Reign Storm - 65 60 +5 2.5 -
99 English Primrose - 58 56 +2 2.5 -
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