Official NHA Assessment

Race 5: MOBILE BETTING VISIT www.trackandball.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Luck Of The Iris
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
4 / 9
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    Sexy Shiraz          3    56.5    1    0.00     2.0   57    52           52    -5
2    Take To War          4    60.0    2    6.60     0.5   66    62           62    -4
3    Luck Of The Iris     4    52.5    3    7.20     0.5   47    47           47    +0
4    Special Charm        3    56.5    4    11.50    2.0   65    52           55    -10
5    Belle's First Wave   3    57.5    5    15.20    2.0   57    54           54    -3
6    Tommy The Kidd       4    60.0    6    16.10    0.5   50    62           62    +12
7    Roy's Hopeful        3    60.0    7    31.20    2.0   -     59           59    +59
99   Brave Voyager        3    60.0    99   0.00     2.0   -     59           59    +0
99   La Dreamer           3    56.5    99   0.00     2.0   -     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 Sexy Shiraz 57 57 52 +5 2.0 -
2 Take To War 66 59 62 -3 0.5 -
3 Luck Of The Iris Line 47 47 47 ✓ Match 0.5
4 Special Charm 65 104 55 +49 2.0 -
5 Belle's First Wave 57 51 54 -3 2.0 -
6 Tommy The Kidd 50 53 62 -9 0.5 -
7 Roy's Hopeful - - 59 -59 2.0 -
99 Brave Voyager - 51 59 -8 2.0 -
99 La Dreamer - 48 52 -4 2.0 -
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