Official NHA Assessment

Race 6: RACING240 MIDDLE STAKES (For horses with nett rating of 89 and below)

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Line Horse
Winchester Mansion
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    Solar Power          3    58.0    1    0.00     2.0   83    81           81    -2
2    Winchester Mansion   3    58.0    2    0.75     2.0   85    85           85    +0
3    Top Quality          3    56.0    3    1.05     2.0   78    81           81    +3
4    Sun Dazed            6    58.0    4    3.30     0.0   82    86           86    +4
5    Chollima             6    60.0    5    4.05     0.0   86    90           90    +4
6    Ragnar Lothbrok      3    54.0    6    5.80     2.0   75    73           73    -2
7    Transact             3    60.0    7    5.90     2.0   87    85           85    -2
8    Mr Frostie           4    52.0    8    6.40     1.0   63    71           71    +8
9    Fort Red             4    56.0    9    6.70     1.0   74    79           79    +5
10   Gaudis Masterpiece   3    61.0    10   7.00     2.0   91    87           87    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Solar Power 83 88 81 +7 2.0 -
2 Winchester Mansion Line 85 129 85 +44 2.0
3 Top Quality 78 99 81 +18 2.0 -
4 Sun Dazed 82 64 86 -22 0.0 -
5 Chollima 86 85 90 -5 0.0 -
6 Ragnar Lothbrok 75 81 73 +8 2.0 -
7 Transact 87 77 85 -8 2.0 -
8 Mr Frostie 63 51 71 -20 1.0 -
9 Fort Red 74 66 79 -13 1.0 -
10 Gaudis Masterpiece 91 80 87 -7 2.0 -
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