Official NHA Assessment

Race 10: COMPENDIUM INSURANCE BROKERS THUKELA HANDICAP (Listed) (Handicap)

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Line Horse
Mary's Greenlight
Reference for assessment
Exact Matches
4 / 17
Calculated = Official
Close Matches
12 / 17
Within 2 points
Significant Diffs
4 / 17
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    Narina Trogon        5    57.0    1    0.00     0.0   100   101          100   +0
2    Money Heist          2    57.0    2    0.90     0.0   100   105          105   +5
3    Get Impressed        2    56.5    3    1.90     0.0   101   103          103   +2
4    Mary's Greenlight    4    57.5    4    3.20     0.5   103   103          103   +0
5    Formagear            5    60.0    5    3.70     0.0   106   108          108   +2
6    Mr Master Starter    6    55.0    6    3.95     0.0   96    98           98    +2
7    Navajo Nation        4    60.0    7    4.00     0.5   108   107          107   -1
8    Noble City           3    59.5    8    4.05     1.0   105   105          105   +0
8    On The Horizon       4    57.0    8    4.05     0.5   100   101          101   +1
10   That's My Baby       2    54.5    10   5.75     0.0   97    96           96    -1
11   Lady Heist           2    56.0    11   7.65     0.0   98    99           99    +1
12   The Shepherd         3    53.0    12   7.85     1.0   93    91           91    -2
13   Lady Of Power        2    57.5    13   7.90     0.0   101   102          102   +1
14   Grinkov              2    58.0    14   10.30    0.0   102   103          103   +1
99   Last One Standing    3    53.0    99   0.00     1.0   -     91           91    +0
99   Celestial City       4    53.0    99   0.00     0.5   -     92           92    +0
99   Juliet Tango         6    54.5    99   0.00     0.0   95    96           95    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Narina Trogon 100 102 100 +2 0.0 -
2 Money Heist 100 106 105 +1 0.0 -
3 Get Impressed 101 103 103 ✓ Match 0.0 -
4 Mary's Greenlight Line 103 103 103 ✓ Match 0.5
5 Formagear 106 108 108 ✓ Match 0.0 -
6 Mr Master Starter 96 97 98 -1 0.0 -
7 Navajo Nation 108 104 107 -3 0.5 -
8 Noble City 105 93 105 -12 1.0 -
8 On The Horizon 100 100 101 -1 0.5 -
10 That's My Baby 97 97 96 +1 0.0 -
11 Lady Heist 98 97 99 -2 0.0 -
12 The Shepherd 93 97 91 +6 1.0 -
13 Lady Of Power 101 100 102 -2 0.0 -
14 Grinkov 102 87 103 -16 0.0 -
99 Last One Standing - 93 91 +2 1.0 -
99 Celestial City - 92 92 ✓ Match 0.5 -
99 Juliet Tango 95 81 95 -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