Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Miss Tango
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Skyfull              2    57.0    1    0.00     0.0   73    65           65    -8
2    I'm In Love          3    60.0    2    0.60     9.0   73    58           63    -10
3    Rosslyne             2    57.0    3    4.00     0.0   72    66           66    -6
4    Miss Tango           2    57.0    4    4.50     0.0   65    65           65    +0
5    Sassy                2    57.0    5    4.60     0.0   70    65           65    -5
6    Apache Fighter       4    60.0    6    5.75     7.0   -     57           57    +57
7    Dame Colleen         3    60.0    7    6.50     9.0   54    53           53    -1
8    Celtic Babe          2    57.0    8    7.00     0.0   -     65           65    +65
9    Queen Britanna       2    57.0    9    8.00     0.0   68    65           65    -3
99   Jane Wilson          3    60.0    99   0.00     9.0   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Skyfull 73 54 65 -11 0.0 -
2 I'm In Love 73 63 63 ✓ Match 9.0 -
3 Rosslyne 72 58 66 -8 0.0 -
4 Miss Tango Line 65 69 65 +4 0.0
5 Sassy 70 55 65 -10 0.0 -
6 Apache Fighter - 81 57 +24 7.0 -
7 Dame Colleen 54 46 53 -7 9.0 -
8 Celtic Babe - - 65 -65 0.0 -
9 Queen Britanna 68 57 65 -8 0.0 -
99 Jane Wilson - 40 53 -13 9.0 -
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