Official NHA Assessment

Race 7: RACEHORSE OWNERS ASSOCIATION MR 84 HANDICAP (Open)

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Line Horse
Vesuvio
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
4 / 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    Master Ariano        3    55.5    1    0.00     2.5   80    68           80    +0
2    The Brief            3    58.5    2    0.90     2.5   81    78           78    -3
3    Vesuvio              5    55.5    3    2.50     0.0   75    75           75    +0
4    Trois Trois Quatre   5    61.0    4    4.50     0.0   86    84           84    -2
5    Clarkson             4    55.5    5    5.00     1.0   75    71           71    -4
6    Greenbackcurrency    3    55.0    6    6.80     2.5   74    67           67    -7
7    Slinky Mapimpi       5    62.0    7    7.10     0.0   88    86           86    -2
8    Circle Of Grace      4    56.0    8    7.80     1.0   81    72           72    -9
9    Dungeons             2    55.0    9    8.00     0.0   74    72           72    -2
10   Little Prince        3    55.5    10   8.80     2.5   74    68           68    -6
11   Futurewolff          5    55.0    11   9.60     0.0   73    72           72    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Master Ariano 80 84 80 +4 2.5 -
2 The Brief 81 90 78 +12 2.5 -
3 Vesuvio Line 75 85 75 +10 0.0
4 Trois Trois Quatre 86 87 84 +3 0.0 -
5 Clarkson 75 75 71 +4 1.0 -
6 Greenbackcurrency 74 71 67 +4 2.5 -
7 Slinky Mapimpi 88 101 86 +15 0.0 -
8 Circle Of Grace 81 51 72 -21 1.0 -
9 Dungeons 74 73 72 +1 0.0 -
10 Little Prince 74 73 68 +5 2.5 -
11 Futurewolff 73 75 72 +3 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