Official NHA Assessment

Race 8: WINTER COUNTRY CHAMPIONSHIP 1800 FINAL (For horses with nett rating of 81 and below. Non-Black Type)

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Line Horse
Sudden Song
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
6 / 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    Sudden Song          3    59.0    1    0.00     10.0  73    73           73    +0
2    King Pelles          3    60.0    2    0.05     10.0  76    75           75    -1
3    Twice The Master     3    51.5    3    0.45     10.0  58    63           63    +5
4    Ice Rain             4    60.5    4    2.20     7.0   83    85           85    +2
5    Ozark                4    52.0    5    2.50     7.0   64    67           67    +3
6    Prime Venture        3    58.0    6    3.00     10.0  76    73           73    -3
7    Born Ready           2    54.5    7    3.40     0.0   70    85           85    +15
8    Naushon              3    54.0    8    3.45     10.0  66    64           64    -2
9    Lockheedlightning    2    57.0    9    3.85     0.0   69    90           90    +21
10   Baton Rouge          4    61.5    10   3.90     7.0   79    85           85    +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sudden Song Line 73 71 73 -2 10.0
2 King Pelles 76 122 75 +47 10.0 -
3 Twice The Master 58 58 63 -5 10.0 -
4 Ice Rain 83 101 85 +16 7.0 -
5 Ozark 64 61 67 -6 7.0 -
6 Prime Venture 76 78 73 +5 10.0 -
7 Born Ready 70 55 85 -30 0.0 -
8 Naushon 66 68 64 +4 10.0 -
9 Lockheedlightning 69 66 90 -24 0.0 -
10 Baton Rouge 79 69 85 -16 7.0 -
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