Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Blue Eruption
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
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    Blue Eruption        2    57.0    1    0.00     0.0   73    73           73    +0
2    Brazilian Storm      4    60.0    2    0.10     6.0   -     67           67    +67
3    Unapologetic         2    57.0    3    4.75     0.0   -     73           73    +73
4    Jane Wilson          3    60.0    4    6.75     9.5   38    60           60    +22
5    Voshaarnooi          2    57.0    5    8.75     0.0   58    73           73    +15
6    Feel The Magic       2    57.0    6    17.75    0.0   24    73           73    +49
7    Cassowary            3    60.0    7    21.25    9.5   49    60           60    +11
99   Queen Theodora       4    60.0    99   0.00     6.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blue Eruption Line 73 69 73 -4 0.0
2 Brazilian Storm - 42 67 -25 6.0 -
3 Unapologetic - 51 73 -22 0.0 -
4 Jane Wilson 38 40 60 -20 9.5 -
5 Voshaarnooi 58 50 73 -23 0.0 -
6 Feel The Magic 24 30 73 -43 0.0 -
7 Cassowary 49 37 60 -23 9.5 -
99 Queen Theodora - 56 67 -11 6.0 -
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