Official NHA Assessment

Race 1: HOLLYWOODBETS KENILWORTH WELCOMES YOU WORK RIDERS' MAIDEN PLATE (For all Maidens)

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Line Horse
Rafiki
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Wylie Jack           6    62.0    1    0.00     0.0   57    84           63    +6
2    Carriacou            3    61.0    2    0.20     8.5   -     65           65    +65
3    Cider House Rules    2    61.0    3    1.70     5.5   77    71           71    -6
4    Rafiki               2    61.0    4    1.90     5.5   71    71           71    +0
5    Granddaddy Purple    3    62.0    5    2.90     8.5   52    67           67    +15
6    Gimme Gorgeous       3    61.0    6    5.15     8.5   -     65           65    +65
7    Rogue Male           3    62.0    7    5.65     8.5   40    67           67    +27
8    Perfect Revenge      3    59.5    8    6.90     8.5   -     62           62    +62
9    Malinois             3    62.0    9    11.15    8.5   -     67           67    +67
10   Janneman             4    62.0    10   99.99    10.0  -     64           64    +64
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Wylie Jack 57 61 63 -2 0.0 -
2 Carriacou - 78 65 +13 8.5 -
3 Cider House Rules 77 69 71 -2 5.5 -
4 Rafiki Line 71 67 71 -4 5.5
5 Granddaddy Purple 52 50 67 -17 8.5 -
6 Gimme Gorgeous - 57 65 -8 8.5 -
7 Rogue Male 40 50 67 -17 8.5 -
8 Perfect Revenge - 44 62 -18 8.5 -
9 Malinois - - 67 -67 8.5 -
10 Janneman - 20 64 -44 10.0 -
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