Official NHA Assessment

Race 8: TAB.CO.ZA MIDDLE STAKES (For horses with nett rating of 105 and below)

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Line Horse
Two Miles West
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
2 / 13
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    Kamensky             3    58.0    1    0.00     2.5   99    92           92    -7
2    Mount Darwin         3    54.0    2    0.30     2.5   89    89           89    +0
3    Two Miles West       3    56.0    3    2.30     2.5   90    90           90    +0
4    Player               3    56.0    4    3.30     2.5   91    89           89    -2
5    Pocket Watch         2    52.0    5    4.40     0.0   83    85           85    +2
6    Doitwithdiamonds     4    58.0    6    6.20     1.0   100   95           95    -5
7    Presley              4    58.0    7    7.20     1.0   94    95           95    +1
8    Master Christmas     4    58.0    8    10.45    1.0   96    95           95    -1
9    Apache Son           4    56.0    9    15.75    1.0   93    91           91    -2
10   Savannah Storm       5    62.0    10   17.00    0.0   105   105          105   +0
99   Natyam               5    62.0    99   0.00     0.0   -     105          105   +0
99   Dance King           2    52.0    99   0.00     0.0   -     85           85    +0
99   My Lady Soul         4    52.0    99   0.00     1.0   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kamensky 99 105 92 +13 2.5 -
2 Mount Darwin 89 81 89 -8 2.5 -
3 Two Miles West Line 90 93 90 +3 2.5
4 Player 91 84 89 -5 2.5 -
5 Pocket Watch 83 83 85 -2 0.0 -
6 Doitwithdiamonds 100 99 95 +4 1.0 -
7 Presley 94 90 95 -5 1.0 -
8 Master Christmas 96 94 95 -1 1.0 -
9 Apache Son 93 89 91 -2 1.0 -
10 Savannah Storm 105 102 105 -3 0.0 -
99 Natyam - 102 105 -3 0.0 -
99 Dance King - 89 85 +4 0.0 -
99 My Lady Soul - 86 83 +3 1.0 -
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