Official NHA Assessment

Race 6: www.goldcircle.co.za MR 68 HANDICAP (Open)

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Line Horse
Casimiro
Reference for assessment
Exact Matches
0 / 16
Calculated = Official
Close Matches
3 / 16
Within 2 points
Significant Diffs
9 / 16
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    Winter Waves         7    58.5    1    0.00     0.0   65    67           65    +0
2    Admiral Birnham      3    59.0    2    1.20     4.0   74    64           64    -10
3    Lady Serena          3    57.5    3    2.00     4.0   71    60           61    -10
4    Casimiro             4    58.0    4    2.60     2.0   64    64           64    +0
5    Montana Sky          5    53.5    5    2.65     0.0   55    59           59    +4
6    Extract              3    50.0    6    2.95     4.0   64    44           54    -10
6    Cafe Pacifica        4    53.5    6    2.95     2.0   58    55           55    -3
8    Walton Hall          5    55.0    8    3.55     0.0   58    61           61    +3
9    Duchess Of Sussex    4    54.5    9    3.85     2.0   57    56           56    -1
10   Saipan               5    51.5    10   4.25     0.0   56    54           54    -2
11   Prospero             4    60.0    11   6.25     2.0   68    66           66    -2
12   Master Vision        5    57.0    12   6.50     0.0   62    64           64    +2
13   Arrow's Mark         6    58.5    13   6.80     0.0   65    67           67    +2
14   Dinetto              5    52.0    14   7.05     0.0   51    54           54    +3
15   Sweet William        6    52.0    15   7.45     0.0   52    54           54    +2
99   Palace Wind          5    52.0    99   0.00     0.0   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Winter Waves 65 77 65 +12 0.0 -
2 Admiral Birnham 74 68 64 +4 4.0 -
3 Lady Serena 71 80 61 +19 4.0 -
4 Casimiro Line 64 62 64 -2 2.0
5 Montana Sky 55 51 59 -8 0.0 -
6 Extract 64 60 54 +6 4.0 -
6 Cafe Pacifica 58 51 55 -4 2.0 -
8 Walton Hall 58 50 61 -11 0.0 -
9 Duchess Of Sussex 57 62 56 +6 2.0 -
10 Saipan 56 52 54 -2 0.0 -
11 Prospero 68 68 66 +2 2.0 -
12 Master Vision 62 47 64 -17 0.0 -
13 Arrow's Mark 65 54 67 -13 0.0 -
14 Dinetto 51 50 54 -4 0.0 -
15 Sweet William 52 49 54 -5 0.0 -
99 Palace Wind - 48 54 -6 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