Official NHA Assessment

Race 4: MOBILE BETTING VISIT www.trackandball.co.za MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

Back to Race
Line Horse
Duchess Of Gold
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Fashionigma          3    58.5    1    0.00     9.5   59    54           54    -5
2    Duchess Of Gold      2    56.0    2    4.20     0.0   69    69           69    +0
3    Cataleya Summer      2    56.0    3    4.50     0.0   70    68           68    -2
4    Mythical Tune        3    60.0    4    7.40     9.5   61    57           57    -4
5    Just Virginia        2    56.0    5    7.55     0.0   50    68           68    +18
6    La Dreamer           3    60.0    6    9.85     9.5   53    57           57    +4
7    Storm Jewel          3    60.0    7    11.05    9.5   -     57           57    +57
8    Duchessofnormandy    2    56.0    8    12.25    0.0   58    68           68    +10
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fashionigma 59 50 54 -4 9.5 -
2 Duchess Of Gold Line 69 62 69 -7 0.0
3 Cataleya Summer 70 74 68 +6 0.0 -
4 Mythical Tune 61 50 57 -7 9.5 -
5 Just Virginia 50 56 68 -12 0.0 -
6 La Dreamer 53 48 57 -9 9.5 -
7 Storm Jewel - 48 57 -9 9.5 -
8 Duchessofnormandy 58 54 68 -14 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