Official NHA Assessment

Race 3: www.tabgold.co.za MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Mythical Tune
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 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    Whatsupbuttacup      3    58.5    1    0.00     2.0   -     52           6     +6
2    Impersonation        3    60.0    2    0.40     2.0   66    62           62    -4
3    Mythical Tune        3    60.0    3    3.90     2.0   57    57           57    +0
4    Trip To Nebraska     2    60.0    4    4.30     0.0   63    60           60    -3
5    Queen Jackson        3    60.0    5    8.10     2.0   53    55           55    +2
6    Lady Is A Champ      2    60.0    6    9.90     0.0   59    59           59    +0
7    Pixie In Love        3    60.0    7    9.95     2.0   64    55           55    -9
8    Galaxy Rose          2    53.5    8    17.75    0.0   -     46           46    +46
9    Winter Escape        2    55.0    9    19.35    0.0   -     49           49    +49
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Whatsupbuttacup - 65 6 +59 2.0 -
2 Impersonation 66 68 62 +6 2.0 -
3 Mythical Tune Line 57 50 57 -7 2.0
4 Trip To Nebraska 63 55 60 -5 0.0 -
5 Queen Jackson 53 50 55 -5 2.0 -
6 Lady Is A Champ 59 57 59 -2 0.0 -
7 Pixie In Love 64 61 55 +6 2.0 -
8 Galaxy Rose - 44 46 -2 0.0 -
9 Winter Escape - 59 49 +10 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