Official NHA Assessment

Race 5: SUMMER CUP 29 NOVEMBER MIDDLE STAKES (For horses with nett rating of 105 and below)

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Line Horse
Vesuvio
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 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    Aladdin's Lamp       4    54.0    1    0.00     0.5   87    86           86    -1
2    Breeze Over          5    60.0    2    0.40     0.0   100   105          105   +5
3    Vesuvio              5    54.0    3    3.80     0.0   89    89           89    +0
4    Arumugam             6    56.0    4    6.30     0.0   91    91           91    +0
5    Twenty Drachma's     4    56.0    5    9.30     0.5   93    90           90    -3
6    Fetching Flyer       3    46.0    6    11.70    2.0   89    67           79    -10
7    Second Base          4    62.0    7    15.50    0.5   102   102          102   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aladdin's Lamp 87 106 86 +20 0.5 -
2 Breeze Over 100 99 105 -6 0.0 -
3 Vesuvio Line 89 85 89 -4 0.0
4 Arumugam 91 74 91 -17 0.0 -
5 Twenty Drachma's 93 83 90 -7 0.5 -
6 Fetching Flyer 89 84 79 +5 2.0 -
7 Second Base 102 99 102 -3 0.5 -
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