Official NHA Assessment

Race 6: RACING240 MR 82 HANDICAP (Open)

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Line Horse
Prince Of Kildare
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 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    Open Highway         4    60.5    1    0.00     3.0   83    80           83    +0
2    Prince Of Kildare    4    55.5    2    1.80     3.0   73    73           73    +0
3    Deception Pass       4    58.0    3    4.80     3.0   78    75           75    -3
4    Itsnowornever        5    52.5    4    5.50     0.0   67    70           70    +3
5    Palace Attack        2    58.5    5    6.20     0.0   91    82           82    -9
6    Sea Shanty           4    56.0    6    10.30    3.0   74    71           71    -3
7    Zanthar              3    55.0    7    10.55    6.0   80    63           70    -10
8    Jury's Out           2    62.5    8    14.30    0.0   87    90           90    +3
9    Ombudsman            3    60.5    9    17.80    6.0   83    74           74    -9
99   Impact Investor      2    58.5    99   0.00     0.0   -     82           82    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Open Highway 83 94 83 +11 3.0 -
2 Prince Of Kildare Line 73 80 73 +7 3.0
3 Deception Pass 78 77 75 +2 3.0 -
4 Itsnowornever 67 64 70 -6 0.0 -
5 Palace Attack 91 86 82 +4 0.0 -
6 Sea Shanty 74 71 71 ✓ Match 3.0 -
7 Zanthar 80 80 70 +10 6.0 -
8 Jury's Out 87 85 90 -5 0.0 -
9 Ombudsman 83 83 74 +9 6.0 -
99 Impact Investor - 77 82 -5 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