Official NHA Assessment

Race 1: www.tabgold.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Doin' Time
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 11
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    Irish Luck           2    57.5    1    0.00     0.0   74    56           56    -18
2    Cosmic Captain       2    60.0    2    4.00     0.0   66    62           62    -4
3    Hat Hot Hat          4    60.0    3    4.25     2.0   54    58           58    +4
4    Helsinki             2    60.0    4    5.65     0.0   80    61           70    -10
5    Doin' Time           5    60.0    5    6.35     0.0   61    61           61    +0
6    Uncle Lucky          2    60.0    6    8.75     0.0   51    61           61    +10
7    Global Movement      6    60.0    7    14.05    0.0   65    61           61    -4
8    Greenside            2    60.0    8    22.15    0.0   53    61           61    +8
9    Clever Orrie         3    60.0    9    22.25    3.0   -     55           55    +55
99   Caberneigh           3    60.0    99   0.00     3.0   -     55           55    +0
99   Plettenberg          3    58.5    99   0.00     3.0   -     52           52    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Irish Luck 74 72 56 +16 0.0 -
2 Cosmic Captain 66 70 62 +8 0.0 -
3 Hat Hot Hat 54 66 58 +8 2.0 -
4 Helsinki 80 72 70 +2 0.0 -
5 Doin' Time Line 61 54 61 -7 0.0
6 Uncle Lucky 51 61 61 ✓ Match 0.0 -
7 Global Movement 65 65 61 +4 0.0 -
8 Greenside 53 50 61 -11 0.0 -
9 Clever Orrie - - 55 -55 3.0 -
99 Caberneigh - 61 55 +6 3.0 -
99 Plettenberg - 59 52 +7 3.0 -
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