Official NHA Assessment

Race 2: FRANK HARDY 1000 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Antonia Augusta
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 7
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    Maiguru              2    57.0    1    0.00     0.0   71    55           55    -16
2    St Patrick's Day     4    58.5    2    4.50     4.5   48    50           50    +2
3    Antonia Augusta      2    57.0    3    4.75     0.0   55    55           55    +0
4    Elusive Jewel        2    57.0    4    4.80     0.0   55    55           55    +0
5    Vickeyneki           2    57.0    5    21.55    0.0   49    55           55    +6
6    Alyeska              3    60.0    6    29.80    8.0   53    45           45    -8
99   Zayhaan              4    60.0    99   0.00     4.5   -     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 Maiguru 71 66 55 +11 0.0 -
2 St Patrick's Day 48 42 50 -8 4.5 -
3 Antonia Augusta Line 55 57 55 +2 0.0
4 Elusive Jewel 55 57 55 +2 0.0 -
5 Vickeyneki 49 45 55 -10 0.0 -
6 Alyeska 53 42 45 -3 8.0 -
99 Zayhaan - 29 52 -23 4.5 -
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