Official NHA Assessment

Race 2: WWW.TAB4RACING.COM CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
Skyfull
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
4 / 9
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    Lady Calavera        4    56.0    1    0.00     2.5   71    72           72    +1
2    Skyfull              2    52.0    2    3.00     0.0   71    71           71    +0
3    Duke Of Rain         3    58.0    3    3.05     5.0   71    73           73    +2
4    Destiny Of Souls     2    60.0    4    3.40     0.0   83    86           86    +3
5    Three Strands        3    56.0    5    3.50     5.0   80    68           70    -10
6    Timeforthat          4    52.0    6    4.25     2.5   61    65           65    +4
7    Burmese Tiara        4    56.0    7    5.00     2.5   70    72           72    +2
8    Prairie Falcon       3    58.0    8    8.00     5.0   73    71           71    -2
9    Earl of Cardigan     3    52.0    9    19.00    5.0   52    59           59    +7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Calavera 71 81 72 +9 2.5 -
2 Skyfull Line 71 54 71 -17 0.0
3 Duke Of Rain 71 70 73 -3 5.0 -
4 Destiny Of Souls 83 89 86 +3 0.0 -
5 Three Strands 80 74 70 +4 5.0 -
6 Timeforthat 61 60 65 -5 2.5 -
7 Burmese Tiara 70 68 72 -4 2.5 -
8 Prairie Falcon 73 78 71 +7 5.0 -
9 Earl of Cardigan 52 50 59 -9 5.0 -
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