Official NHA Assessment

Race 7: RACING240 FOR RACING. FOR YOU CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
Covert Operator
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
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    Axel Collins         5    59.5    1    0.00     0.0   75    68           68    -7
2    Feather The Nest     4    52.5    2    0.10     3.5   56    47           47    -9
3    Beaded Gown          3    54.0    3    0.85     3.0   63    51           53    -10
4    Covert Operator      6    59.5    4    1.25     0.0   68    68           68    +0
5    Tre Amici            2    59.5    5    1.50     2.0   74    64           64    -10
6    Timbavati River      3    55.5    6    1.60     3.0   60    54           54    -6
7    Dancing Dora         6    60.0    7    3.50     0.0   75    69           69    -6
8    Storm Jewel          3    51.5    8    3.90     3.0   63    46           53    -10
9    Mercer Girl          6    52.0    9    6.15     0.0   56    53           53    -3
10   Camerata             2    56.0    10   11.15    2.0   68    57           58    -10
99   Mother Of Pearl      3    56.0    99   0.00     3.0   -     55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Axel Collins 75 55 68 -13 0.0 -
2 Feather The Nest 56 54 47 +7 3.5 -
3 Beaded Gown 63 58 53 +5 3.0 -
4 Covert Operator Line 68 77 68 +9 0.0
5 Tre Amici 74 64 64 ✓ Match 2.0 -
6 Timbavati River 60 79 54 +25 3.0 -
7 Dancing Dora 75 53 69 -16 0.0 -
8 Storm Jewel 63 48 53 -5 3.0 -
9 Mercer Girl 56 53 53 ✓ Match 0.0 -
10 Camerata 68 49 58 -9 2.0 -
99 Mother Of Pearl - 63 55 +8 3.0 -
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