Official NHA Assessment

Race 5: MIDDLE STAKES (For horses with nett rating of 92 and below)

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Line Horse
Jubilee
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
4 / 6
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    Sun Bird             3    53.0    1    0.00     1.0   81    74           74    -7
2    Jubilee              7    58.0    2    0.25     0.0   86    86           86    +0
3    Regulate             3    54.0    3    0.35     1.0   73    81           81    +8
4    Citrusdal            8    56.0    4    0.60     0.0   80    87           87    +7
5    Lily Blue            5    57.0    5    1.10     0.0   90    88           88    -2
6    Raining Again        6    60.0    6    5.10     0.0   90    90           90    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sun Bird 81 87 74 +13 1.0 -
2 Jubilee Line 86 72 86 -14 0.0
3 Regulate 73 79 81 -2 1.0 -
4 Citrusdal 80 81 87 -6 0.0 -
5 Lily Blue 90 86 88 -2 0.0 -
6 Raining Again 90 73 90 -17 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