Official NHA Assessment

Race 2: TAB 4RACING APP MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
None identified
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    Tabby Kat            2    56.0    1    0.00     0.0   -     -            -     +0
2    Summerland           5    56.0    2    1.30     0.0   -     -            -     +0
3    Skyfull              2    56.0    3    3.50     0.0   -     -            -     +0
4    Nice Move            3    60.0    4    4.00     1.0   73    -            70    -3
5    Ballycotton          2    56.0    5    5.10     0.0   -     -            -     +0
6    Miss Tango           2    56.0    6    5.40     0.0   -     -            -     +0
7    Look To The Stars    3    60.0    7    10.00    1.0   -     -            -     +0
99   Double Joy           2    56.0    99   0.00     0.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tabby Kat - 83 - +83 0.0 -
2 Summerland - 45 - +45 0.0 -
3 Skyfull - 54 - +54 0.0 -
4 Nice Move 73 70 70 ✓ Match 1.0 -
5 Ballycotton - 53 - +53 0.0 -
6 Miss Tango - 69 - +69 0.0 -
7 Look To The Stars - 58 - +58 1.0 -
99 Double Joy - 44 - - 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