Official NHA Assessment

Race 4: TAB 4RACING APP MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Nazdarovya
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Coldhardstare        2    57.0    1    0.00     1.5   -     63           6     +6
2    Nazdarovya           3    60.0    2    1.75     2.5   67    67           67    +0
3    Dame Twining         2    57.0    3    1.80     1.5   -     63           63    +63
4    Mayenne              3    60.0    4    2.80     2.5   65    67           67    +2
5    Rose For Trippi      2    57.0    5    3.50     1.5   -     63           63    +63
6    There's A Star       2    57.0    6    17.50    1.5   -     63           63    +63
99   Walala Wasala        3    60.0    99   0.00     2.5   -     67           67    +0
99   Quest from Afar      3    60.0    99   0.00     2.5   -     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 Coldhardstare - 94 6 +88 1.5 -
2 Nazdarovya Line 67 63 67 -4 2.5
3 Dame Twining - 72 63 +9 1.5 -
4 Mayenne 65 61 67 -6 2.5 -
5 Rose For Trippi - 80 63 +17 1.5 -
6 There's A Star - - 63 -63 1.5 -
99 Walala Wasala - 61 67 -6 2.5 -
99 Quest from Afar - 67 67 ✓ Match 2.5 -
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