Official NHA Assessment

Race 1: HOLLYWOODBETS DURBANVILLE WELCOMES YOU RESTRICTED MAIDEN PLATE (For 3 year olds)

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Line Horse
Kaapse Klopse
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
2 / 14
Within 2 points
Significant Diffs
12 / 14
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    Tenango              4    60.0    1    0.00     4.5   -     69           6     +6
2    Kaapse Klopse        2    60.0    2    3.00     0.0   80    80           80    +0
3    Prince Of Tibet      4    60.0    3    3.20     4.5   -     71           71    +71
4    Lindbergh            2    60.0    4    3.95     0.0   84    79           79    -5
5    Connery              4    60.0    5    4.15     4.5   83    70           73    -10
6    Golden Grey          4    60.0    6    5.40     4.5   83    69           73    -10
7    King Of Spin         3    60.0    7    5.90     7.0   -     64           64    +64
8    Explosive Speed      2    60.0    8    6.40     0.0   -     78           78    +78
9    Colonel Green        3    60.0    9    6.80     7.0   -     64           64    +64
10   Sooty                4    60.0    10   7.80     4.5   -     69           69    +69
11   Guarding The Wall    4    60.0    11   8.20     4.5   -     69           69    +69
12   The Grey King        4    60.0    12   8.60     4.5   -     69           69    +69
13   Lonach               3    60.0    13   23.60    7.0   -     64           64    +64
99   Terminator           4    60.0    99   0.00     4.5   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tenango - 126 6 +120 4.5 -
2 Kaapse Klopse Line 80 60 80 -20 0.0
3 Prince Of Tibet - 63 71 -8 4.5 -
4 Lindbergh 84 85 79 +6 0.0 -
5 Connery 83 96 73 +23 4.5 -
6 Golden Grey 83 64 73 -9 4.5 -
7 King Of Spin - 91 64 +27 7.0 -
8 Explosive Speed - 68 78 -10 0.0 -
9 Colonel Green - 62 64 -2 7.0 -
10 Sooty - 75 69 +6 4.5 -
11 Guarding The Wall - 67 69 -2 4.5 -
12 The Grey King - 98 69 +29 4.5 -
13 Lonach - - 64 -64 7.0 -
99 Terminator - 86 69 +17 4.5 -
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