Official NHA Assessment

Race 1: Hollywoodbets DURBANVILLE WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Call Of The Karoo
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
9 / 12
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    Marketa              2    58.5    1    0.00     6.5   77    80           80    +3
2    Call Of The Karoo    2    60.0    2    1.25     6.5   83    83           83    +0
3    Panjandrum           2    60.0    3    3.75     6.5   -     83           83    +83
4    Crazy Little Thing   2    56.0    4    4.25     6.5   70    75           75    +5
5    Whatastar            2    60.0    5    5.50     6.5   79    83           83    +4
6    Pennys Choice        2    60.0    6    5.55     6.5   80    83           83    +3
7    Delaroche            2    60.0    7    5.65     6.5   -     83           83    +83
8    Malibu Blitz         3    60.0    8    6.40     9.5   -     77           77    +77
9    First Kiss           2    60.0    9    6.80     6.5   68    83           83    +15
10   Catrien              3    60.0    10   7.55     9.5   -     77           77    +77
11   Bluffton             3    60.0    11   11.30    9.5   -     77           77    +77
12   Fonte                3    60.0    12   11.60    9.5   -     77           77    +77
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Marketa 77 76 80 -4 6.5 -
2 Call Of The Karoo Line 83 79 83 -4 6.5
3 Panjandrum - 77 83 -6 6.5 -
4 Crazy Little Thing 70 66 75 -9 6.5 -
5 Whatastar 79 75 83 -8 6.5 -
6 Pennys Choice 80 65 83 -18 6.5 -
7 Delaroche - 66 83 -17 6.5 -
8 Malibu Blitz - 73 77 -4 9.5 -
9 First Kiss 68 55 83 -28 6.5 -
10 Catrien - 60 77 -17 9.5 -
11 Bluffton - 48 77 -29 9.5 -
12 Fonte - - 77 -77 9.5 -
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