Official NHA Assessment

Race 7: #YOUCANBETONUS! MIDDLE STAKES (For horses with nett rating of 105 and below)

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Line Horse
Guy Gibson
Reference for assessment
Exact Matches
0 / 16
Calculated = Official
Close Matches
5 / 16
Within 2 points
Significant Diffs
5 / 16
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    Banff                2    56.0    1    0.00     1.0   93    93           93    +0
2    Black Egret          3    56.5    2    1.20     2.0   93    92           92    -1
3    Guy Gibson           2    60.0    3    1.70     1.0   101   101          101   +0
4    Night Bomber         4    58.0    4    2.70     2.5   96    94           94    -2
5    Richard The First    2    54.0    5    3.20     1.0   89    89           89    +0
6    Callmewhenuneedme    4    54.5    6    4.45     2.5   99    87           89    -10
7    Bob's Your Uncle     5    58.0    7    5.55     0.0   97    99           99    +2
8    Esquevelle           3    56.0    8    5.80     2.0   90    91           91    +1
9    Halberdier           4    56.0    9    5.90     2.5   91    90           90    -1
10   Warm Winter Nite     2    56.0    10   6.15     1.0   92    93           93    +1
11   Passage Of Power     6    58.0    11   6.45     0.0   96    99           99    +3
12   Jury's Out           2    56.0    12   7.95     1.0   90    93           93    +3
13   Chyavana             3    62.0    13   8.55     2.0   104   103          103   -1
14   Tsar Bomba           3    58.0    14   9.05     2.0   95    95           95    +0
15   Biofarmer            4    54.5    15   10.35    2.5   88    87           87    -1
99   Across The Pond      2    54.5    99   0.00     1.0   -     90           90    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Banff 93 97 93 +4 1.0 -
2 Black Egret 93 90 92 -2 2.0 -
3 Guy Gibson Line 101 99 101 -2 1.0
4 Night Bomber 96 96 94 +2 2.5 -
5 Richard The First 89 87 89 -2 1.0 -
6 Callmewhenuneedme 99 97 89 +8 2.5 -
7 Bob's Your Uncle 97 103 99 +4 0.0 -
8 Esquevelle 90 86 91 -5 2.0 -
9 Halberdier 91 83 90 -7 2.5 -
10 Warm Winter Nite 92 92 93 -1 1.0 -
11 Passage Of Power 96 76 99 -23 0.0 -
12 Jury's Out 90 85 93 -8 1.0 -
13 Chyavana 104 106 103 +3 2.0 -
14 Tsar Bomba 95 91 95 -4 2.0 -
15 Biofarmer 88 78 87 -9 2.5 -
99 Across The Pond - 87 90 -3 1.0 -
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