Official NHA Assessment

Race 1: GALLOP TV MAIDEN PLATE (For all Maidens)

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Line Horse
Holy Star
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    Cowdray Park         3    58.5    1    0.00     10.5  64    77           70    +6
2    Holy Star            2    58.0    2    0.30     7.0   83    83           83    +0
3    Grand Force          3    60.0    3    3.60     10.5  68    80           80    +12
4    Mfethu               2    58.0    4    4.80     7.0   -     83           83    +83
5    Champagne Problems   2    57.5    5    4.95     7.0   67    82           82    +15
6    Winter In London     3    58.0    6    6.75     10.5  -     76           76    +76
7    Time In Paris        4    53.5    7    6.95     12.0  58    64           64    +6
8    Hollywood Heiress    2    55.5    8    11.05    7.0   78    78           78    +0
9    Kingsboy (GB)        3    60.0    9    11.10    10.5  56    80           80    +24
10   Captain's Dynasty    4    60.0    10   13.10    12.0  -     77           77    +77
99   Black Frost          2    55.5    99   0.00     7.0   -     78           78    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cowdray Park 64 80 70 +10 10.5 -
2 Holy Star Line 83 82 83 -1 7.0
3 Grand Force 68 54 80 -26 10.5 -
4 Mfethu - 84 83 +1 7.0 -
5 Champagne Problems 67 68 82 -14 7.0 -
6 Winter In London - 80 76 +4 10.5 -
7 Time In Paris 58 61 64 -3 12.0 -
8 Hollywood Heiress 78 65 78 -13 7.0 -
9 Kingsboy (GB) 56 53 80 -27 10.5 -
10 Captain's Dynasty - 55 77 -22 12.0 -
99 Black Frost - 76 78 -2 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