Official NHA Assessment

Race 6: 4RACING.TV MR 86 HANDICAP (Open)

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Line Horse
Silver Tycoon
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
6 / 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    Moon Game            4    59.5    1    0.00     0.5   85    81           85    +0
2    Acorn                2    59.5    2    0.10     0.0   88    82           82    -6
3    Silver Tycoon        7    55.0    3    1.35     0.0   76    76           76    +0
4    Life On Mars         4    56.0    4    2.35     0.5   78    76           76    -2
5    Eyjafjallajokull     2    54.5    5    2.85     0.0   78    74           74    -4
6    Father's Frost       7    61.0    6    6.10     0.0   88    85           85    -3
7    European Summer      3    61.5    7    6.35     1.0   89    84           84    -5
8    Daughter Of Zeus     4    58.0    8    7.85     0.5   82    78           78    -4
9    Sand Bank            2    55.0    9    8.35     0.0   79    73           73    -6
10   Vista Nova           4    59.0    10   13.85    0.5   84    80           80    -4
99   Then In Focus        2    54.5    99   0.00     0.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Moon Game 85 89 85 +4 0.5 -
2 Acorn 88 89 82 +7 0.0 -
3 Silver Tycoon Line 76 74 76 -2 0.0
4 Life On Mars 78 87 76 +11 0.5 -
5 Eyjafjallajokull 78 86 74 +12 0.0 -
6 Father's Frost 88 62 85 -23 0.0 -
7 European Summer 89 77 84 -7 1.0 -
8 Daughter Of Zeus 82 82 78 +4 0.5 -
9 Sand Bank 79 63 73 -10 0.0 -
10 Vista Nova 84 81 80 +1 0.5 -
99 Then In Focus - 71 72 -1 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