Official NHA Assessment

Race 4: BETONTAB.CO.ZA MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Primrose Path
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
10 / 11
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    Simply Magic         3    60.0    1    0.00     2.5   68    56           56    -12
2    Law Of Success       3    60.0    2    0.25     2.5   67    56           57    -10
3    Francine             4    57.0    3    3.00     0.0   -     55           55    +55
4    Primrose Path        2    60.0    4    3.50     1.5   58    58           58    +0
5    Duenna               2    57.0    5    8.00     1.5   -     52           52    +52
6    Tamadora             2    57.0    6    15.00    1.5   -     52           52    +52
7    Someday Maybe        3    60.0    7    19.00    2.5   68    56           58    -10
8    Inventrix            2    60.0    8    23.00    1.5   70    58           60    -10
99   Village Green        2    54.5    99   0.00     1.5   -     47           47    +0
99   Mizzen Sail          2    57.0    99   0.00     1.5   -     52           52    +0
99   Sparkling Jubilee    5    60.0    99   0.00     0.0   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Simply Magic 68 67 56 +11 2.5 -
2 Law Of Success 67 81 57 +24 2.5 -
3 Francine - 99 55 +44 0.0 -
4 Primrose Path Line 58 77 58 +19 1.5
5 Duenna - 94 52 +42 1.5 -
6 Tamadora - 58 52 +6 1.5 -
7 Someday Maybe 68 56 58 -2 2.5 -
8 Inventrix 70 73 60 +13 1.5 -
99 Village Green - 81 47 +34 1.5 -
99 Mizzen Sail - 87 52 +35 1.5 -
99 Sparkling Jubilee - 76 61 +15 0.0 -
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