Official NHA Assessment

Race 4: play.tabonline.co.za MAIDEN SPECIAL WEIGHTS (F & M) (For all Maiden Fillies & Mares)

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Line Horse
Red Kite
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 10
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    Estimated            3    60.0    1    0.00     4.0   -     64           6     +6
2    Anna Karenina        3    56.0    2    1.00     4.0   67    60           60    -7
3    Hang Out The Stars   5    58.0    3    1.20     0.0   71    72           72    +1
4    Red Kite             3    60.0    4    1.50     4.0   67    67           67    +0
5    Just Before Dawn     3    51.0    5    1.60     4.0   57    49           49    -8
6    Typeface             2    60.0    6    1.70     0.0   75    75           75    +0
7    Mary Lamb            3    58.5    7    2.00     4.0   72    64           64    -8
8    Look Forward         3    50.0    8    3.00     4.0   52    46           46    -6
9    Jazz Diva            3    57.5    9    5.50     4.0   70    59           60    -10
10   Diamond Rockstar     3    50.0    10   5.80     4.0   48    44           44    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Estimated - 70 6 +64 4.0 -
2 Anna Karenina 67 58 60 -2 4.0 -
3 Hang Out The Stars 71 58 72 -14 0.0 -
4 Red Kite Line 67 66 67 -1 4.0
5 Just Before Dawn 57 60 49 +11 4.0 -
6 Typeface 75 78 75 +3 0.0 -
7 Mary Lamb 72 76 64 +12 4.0 -
8 Look Forward 52 50 46 +4 4.0 -
9 Jazz Diva 70 70 60 +10 4.0 -
10 Diamond Rockstar 48 42 44 -2 4.0 -
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