Official NHA Assessment

Race 4: RACING240 FOR RACING. FOR YOU MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Master Christmas
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
7 / 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    Back In Business     3    60.0    1    0.00     1.0   90    92           92    +2
2    Andi's Girl          4    53.5    2    2.25     0.5   88    83           83    -5
3    Master Christmas     4    58.0    3    4.75     0.5   89    89           89    +0
4    Indlamu              4    60.0    4    4.85     0.5   91    93           93    +2
5    House Of Romanov     2    60.0    5    8.25     0.0   93    94           94    +1
6    Fully Loaded         5    58.0    6    8.50     0.0   87    90           90    +3
7    Global Impact        2    58.0    7    11.70    0.0   86    90           90    +4
8    Just Nuisance        2    58.0    8    13.40    0.0   88    90           90    +2
99   Dr Faustus           2    58.0    99   0.00     0.0   -     90           90    +0
99   Bloomington          3    56.0    99   0.00     1.0   -     84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Back In Business 90 114 92 +22 1.0 -
2 Andi's Girl 88 93 83 +10 0.5 -
3 Master Christmas Line 89 94 89 +5 0.5
4 Indlamu 91 86 93 -7 0.5 -
5 House Of Romanov 93 81 94 -13 0.0 -
6 Fully Loaded 87 94 90 +4 0.0 -
7 Global Impact 86 74 90 -16 0.0 -
8 Just Nuisance 88 85 90 -5 0.0 -
99 Dr Faustus - 78 90 -12 0.0 -
99 Bloomington - 69 84 -15 1.0 -
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