Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION MIDDLE STAKES (For Horses with a nett rating of 105 and below)

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Line Horse
Pack Leader
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
5 / 7
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    Sugar Mountain       3    52.0    1    0.00     8.5   86    66           66    -20
2    Han Solo             5    56.0    2    0.50     0.0   92    96           96    +4
3    Pack Leader          7    56.0    3    2.75     0.0   93    93           93    +0
4    Dean Street          3    54.0    4    3.75     8.5   87    71           77    -10
5    Northern Song        4    54.0    5    9.75     6.0   88    75           78    -10
6    Maria Querol         3    56.0    6    17.75    8.5   96    74           86    -10
7    Major Attraction     4    60.0    7    18.15    6.0   103   87           93    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sugar Mountain 86 122 66 +56 8.5 -
2 Han Solo 92 102 96 +6 0.0 -
3 Pack Leader Line 93 92 93 -1 0.0
4 Dean Street 87 102 77 +25 8.5 -
5 Northern Song 88 77 78 -1 6.0 -
6 Maria Querol 96 96 86 +10 8.5 -
7 Major Attraction 103 103 93 +10 6.0 -
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