Official NHA Assessment

Race 1: DOWNLOAD THE RACE CARD ONLINE www.goldcircle.co.za QUALIFIED MAIDEN PLATE (For all Maidens)

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Line Horse
Without Doubt
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 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    Protea Pride         4    60.0    1    0.00     2.0   59    63           63    +4
2    Purple Operator      3    60.0    2    0.30     3.0   68    66           66    -2
3    Without Doubt        3    60.0    3    0.90     3.0   65    65           65    +0
4    Trident King         3    60.0    4    1.20     3.0   66    65           65    -1
5    Bush Fire            3    60.0    5    3.80     3.0   65    62           62    -3
6    Belle's First Wave   3    60.0    6    4.60     3.0   62    61           61    -1
7    Mon Tresor           3    56.5    7    5.50     3.0   51    54           54    +3
8    Merchant Gold        3    60.0    8    9.70     3.0   62    61           61    -1
9    Dunstealmythunda     3    58.5    9    11.10    3.0   54    58           58    +4
10   Bushido              3    60.0    10   19.80    3.0   54    61           61    +7
11   Blizzard Ahead       3    60.0    11   32.60    3.0   54    61           61    +7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Protea Pride 59 54 63 -9 2.0 -
2 Purple Operator 68 74 66 +8 3.0 -
3 Without Doubt Line 65 63 65 -2 3.0
4 Trident King 66 65 65 ✓ Match 3.0 -
5 Bush Fire 65 62 62 ✓ Match 3.0 -
6 Belle's First Wave 62 51 61 -10 3.0 -
7 Mon Tresor 51 71 54 +17 3.0 -
8 Merchant Gold 62 57 61 -4 3.0 -
9 Dunstealmythunda 54 49 58 -9 3.0 -
10 Bushido 54 51 61 -10 3.0 -
11 Blizzard Ahead 54 50 61 -11 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