Official NHA Assessment

Race 6: WINTER COUNTRY CHAMPIONSHIP 1000 FINAL (For horses with nett rating of 81 and below. Non-Black Type)

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Line Horse
Trippi's Silk
Reference for assessment
Exact Matches
1 / 15
Calculated = Official
Close Matches
4 / 15
Within 2 points
Significant Diffs
10 / 15
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    Silver Screen        2    52.5    1    0.00     7.0   68    73           73    +5
2    Trippi's Silk        4    58.0    2    1.75     12.0  74    74           74    +0
3    Love Shack           2    59.0    3    1.95     7.0   79    86           86    +7
4    Hear My Voice        2    56.5    4    2.95     7.0   74    81           81    +7
5    William West         2    57.5    5    4.45     7.0   71    83           83    +12
6    Major Apollo         2    57.5    6    5.70     7.0   73    83           83    +10
7    Country Time         5    53.0    7    6.00     0.0   67    88           88    +21
8    Casino Ace           5    55.5    8    6.50     0.0   65    93           93    +28
9    Swift Action         3    59.0    9    7.75     10.5  75    79           79    +4
10   A Thousand Kisses    2    51.5    10   8.15     7.0   62    71           71    +9
11   Palo Queen           5    57.0    11   10.15    0.0   78    96           96    +18
12   Wordsworth           7    53.5    12   13.15    0.0   65    89           89    +24
99   Wylie Jack           6    52.0    99   0.00     0.0   -     86           86    +0
99   Bluff On Bluff       3    60.0    99   0.00     10.5  -     81           81    +0
99   She's My Captain     3    58.0    99   0.00     10.5  -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Screen 68 70 73 -3 7.0 -
2 Trippi's Silk Line 74 73 74 -1 12.0
3 Love Shack 79 69 86 -17 7.0 -
4 Hear My Voice 74 54 81 -27 7.0 -
5 William West 71 51 83 -32 7.0 -
6 Major Apollo 73 72 83 -11 7.0 -
7 Country Time 67 62 88 -26 0.0 -
8 Casino Ace 65 56 93 -37 0.0 -
9 Swift Action 75 77 79 -2 10.5 -
10 A Thousand Kisses 62 54 71 -17 7.0 -
11 Palo Queen 78 70 96 -26 0.0 -
12 Wordsworth 65 65 89 -24 0.0 -
99 Wylie Jack - 61 86 -25 0.0 -
99 Bluff On Bluff - 80 81 -1 10.5 -
99 She's My Captain - 77 77 ✓ Match 10.5 -
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