Official NHA Assessment

Race 2: GOLD CIRCLE RACING YOUTUBE CHANNEL MR 70 HANDICAP (Open)

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Line Horse
Hampton Court
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
4 / 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    Iron Bark            3    60.5    1    0.00     7.5   71    56           71    +0
2    Valiente             5    58.5    2    0.60     0.0   72    67           67    -5
3    Addiena              3    57.5    3    2.10     7.5   70    50           60    -10
4    Hampton Court        7    60.0    4    2.40     0.0   70    70           70    +0
5    Beckoning Beauty     4    57.5    5    2.65     9.0   73    47           63    -10
6    Woodstock Festival   6    54.5    6    6.05     0.0   62    59           59    -3
7    Don Reposado         3    55.0    7    8.75     7.5   60    45           50    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Iron Bark 71 96 71 +25 7.5 -
2 Valiente 72 75 67 +8 0.0 -
3 Addiena 70 83 60 +23 7.5 -
4 Hampton Court Line 70 70 70 ✓ Match 0.0
5 Beckoning Beauty 73 75 63 +12 9.0 -
6 Woodstock Festival 62 57 59 -2 0.0 -
7 Don Reposado 60 51 50 +1 7.5 -
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