Official NHA Assessment

Race 8: RACING240 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 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
4 / 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    Busstopinhounslow    3    60.0    1    0.00     1.5   103   95           95    -8
2    Guy Gibson           2    60.0    2    2.00     0.0   101   101          101   +0
3    Hierkommiebokkie     5    56.5    3    2.20     0.0   99    94           94    -5
4    Too Late My Mate     3    47.5    4    2.25     1.5   85    73           75    -10
5    Max The Magician     4    56.0    5    2.50     0.5   93    91           91    -2
6    Buster Barnes        2    60.0    6    2.60     0.0   99    100          100   +1
7    French Bolt          3    56.0    7    3.70     1.5   94    88           88    -6
8    In The Beginning     3    56.0    8    4.10     1.5   94    88           88    -6
9    Andi's Girl          4    56.0    9    4.60     0.5   96    89           89    -7
10   Street Art           3    58.0    10   6.10     1.5   95    91           91    -4
11   Biofarmer            4    52.0    11   6.15     0.5   85    81           81    -4
12   Bob's Your Uncle     5    58.0    12   31.75    0.0   97    94           94    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Busstopinhounslow 103 110 95 +15 1.5 -
2 Guy Gibson Line 101 99 101 -2 0.0
3 Hierkommiebokkie 99 90 94 -4 0.0 -
4 Too Late My Mate 85 81 75 +6 1.5 -
5 Max The Magician 93 95 91 +4 0.5 -
6 Buster Barnes 99 101 100 +1 0.0 -
7 French Bolt 94 92 88 +4 1.5 -
8 In The Beginning 94 91 88 +3 1.5 -
9 Andi's Girl 96 93 89 +4 0.5 -
10 Street Art 95 78 91 -13 1.5 -
11 Biofarmer 85 78 81 -3 0.5 -
12 Bob's Your Uncle 97 103 94 +9 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