Official NHA Assessment

Race 8: RACEHORSE OWNERS ASSOCIATION MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Millahue
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
10 / 12
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    Perfect Witness      3    57.5    1    0.00     1.5   97    87           87    -10
2    Raffles              2    60.0    2    0.20     0.0   98    95           95    -3
3    Millahue             3    56.0    3    0.75     1.5   88    88           88    +0
4    Destiny Of Souls     2    54.5    4    1.75     0.0   88    87           87    -1
5    Spin Doctor          3    56.0    5    2.75     1.5   89    86           86    -3
6    Indlamu              4    62.0    6    2.80     0.5   98    100          100   +2
7    Imperial Master      4    53.5    7    3.50     0.5   88    82           82    -6
8    African Torrent      2    54.0    8    5.00     0.0   85    83           83    -2
9    American Biscuit     3    52.0    9    5.10     1.5   81    76           76    -5
10   Zuzan                3    58.0    10   5.75     1.5   91    88           88    -3
11   The Kop              4    55.5    11   6.75     0.5   91    85           85    -6
12   Whispers Of War (AU  7    56.0    12   13.75    0.0   86    87           87    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Perfect Witness 97 105 87 +18 1.5 -
2 Raffles 98 105 95 +10 0.0 -
3 Millahue Line 88 81 88 -7 1.5
4 Destiny Of Souls 88 89 87 +2 0.0 -
5 Spin Doctor 89 90 86 +4 1.5 -
6 Indlamu 98 86 100 -14 0.5 -
7 Imperial Master 88 90 82 +8 0.5 -
8 African Torrent 85 68 83 -15 0.0 -
9 American Biscuit 81 65 76 -11 1.5 -
10 Zuzan 91 98 88 +10 1.5 -
11 The Kop 91 78 85 -7 0.5 -
12 Whispers Of War (AUS) 86 64 87 -23 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