Official NHA Assessment

Race 9: GIMME A PRINCE (2023) MIDDLE STAKES (For horses with nett rating of 102 and below)

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Line Horse
Guy Gibson
Reference for assessment
Exact Matches
1 / 15
Calculated = Official
Close Matches
6 / 15
Within 2 points
Significant Diffs
7 / 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    Vihaan's Web         2    57.0    1    0.00     1.5   93    92           92    -1
2    Guy Gibson           2    61.5    2    0.80     1.5   101   101          101   +0
3    Licence To Thrill    4    58.5    3    1.20     0.0   94    98           98    +4
4    Quandary             5    58.5    4    1.70     0.0   92    98           98    +6
5    Miss Argonaut        2    53.0    5    2.00     1.5   87    84           84    -3
6    Riverstone           2    55.5    6    2.20     1.5   86    89           89    +3
7    Agrado               3    54.0    7    3.30     2.5   85    84           84    -1
8    Un Bel Di            3    58.5    8    3.80     2.5   94    93           93    -1
9    Good Traveller       6    58.5    9    4.20     0.0   94    98           98    +4
10   King Of Spin         3    57.0    10   5.90     2.5   88    90           90    +2
11   Silver Tudor         5    60.0    11   6.15     0.0   96    101          101   +5
12   Spirit Of Levana     3    56.0    12   6.65     2.5   96    88           88    -8
13   Bourbon Warrior      3    60.0    13   7.05     2.5   99    96           96    -3
14   Isivivane            3    60.0    14   7.65     2.5   98    96           96    -2
15   Actor                2    54.0    15   10.15    1.5   85    86           86    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vihaan's Web 93 107 92 +15 1.5 -
2 Guy Gibson Line 101 99 101 -2 1.5
3 Licence To Thrill 94 98 98 ✓ Match 0.0 -
4 Quandary 92 88 98 -10 0.0 -
5 Miss Argonaut 87 93 84 +9 1.5 -
6 Riverstone 86 84 89 -5 1.5 -
7 Agrado 85 85 84 +1 2.5 -
8 Un Bel Di 94 99 93 +6 2.5 -
9 Good Traveller 94 108 98 +10 0.0 -
10 King Of Spin 88 91 90 +1 2.5 -
11 Silver Tudor 96 99 101 -2 0.0 -
12 Spirit Of Levana 96 73 88 -15 2.5 -
13 Bourbon Warrior 99 99 96 +3 2.5 -
14 Isivivane 98 104 96 +8 2.5 -
15 Actor 85 85 86 -1 1.5 -
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