Official NHA Assessment

Race 1: WELCOME TO THE NATAL NOMADS RACEDAY MAIDEN PLATE (For all Maidens)

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Line Horse
The Marquee
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
10 / 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    Johnny Boy           3    59.0    1    0.00     8.5   -     -            -     +0
2    Eastern Highlands    2    57.5    2    0.30     5.5   -     3            3     +3
3    Touched By Angels    3    59.0    3    0.40     8.5   -     -            -     +0
4    The Marquee          3    59.0    4    0.80     8.5   -     -            -     +0
5    Double Causeway      3    59.0    5    2.60     8.5   -     -            -     +0
6    Christmas Cactus     3    59.0    6    3.70     8.5   -     -            -     +0
7    Place Of Practice    3    59.0    7    5.90     8.5   -     -            -     +0
8    Strutting            3    56.5    8    6.40     8.5   -     -5           -     +0
9    Quarter Master       3    59.0    9    10.60    8.5   -     -            -     +0
10   Hadrian's Wall       3    59.0    10   12.00    8.5   -     -            -     +0
11   Turbo Tiger          2    59.0    11   12.90    5.5   -     6            6     +6
12   Beartic              3    60.0    12   15.00    8.5   59    2            49    -10
13   Tony From Benoni     3    55.0    13   15.30    8.5   -     -8           -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Johnny Boy - 86 - +86 8.5 -
2 Eastern Highlands - 81 3 +78 5.5 -
3 Touched By Angels - 97 - +97 8.5 -
4 The Marquee Line - 85 - +85 8.5
5 Double Causeway - 81 - +81 8.5 -
6 Christmas Cactus - 77 - +77 8.5 -
7 Place Of Practice - 82 - +82 8.5 -
8 Strutting - 79 - +79 8.5 -
9 Quarter Master - 79 - +79 8.5 -
10 Hadrian's Wall - - - ✓ Match 8.5 -
11 Turbo Tiger - 54 6 +48 5.5 -
12 Beartic 59 54 49 +5 8.5 -
13 Tony From Benoni - - - ✓ Match 8.5 -
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