Official NHA Assessment

Race 7: 4RACING.TV MR 98 DIVIDED HANDICAP (Open)

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Line Horse
Spin Doctor
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 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    Running Rifles       3    52.0    1    0.00     2.5   82    82           82    +0
2    Cabinet Shuffle      4    60.0    2    0.10     1.0   98    101          101   +3
3    Spin Doctor          3    54.0    3    0.15     2.5   86    86           86    +0
4    Duke Of Sussex       4    60.5    4    0.25     1.0   99    102          102   +3
5    Fateful Day          3    57.0    5    0.75     2.5   92    96           96    +4
6    Home Of The Brave    2    52.0    6    1.40     0.0   85    90           90    +5
7    Flashy Apache        6    60.0    7    1.50     0.0   98    106          106   +8
8    Fast Love            4    59.0    8    1.55     1.0   96    102          102   +6
9    Bey Suyay            4    56.5    9    3.25     1.0   91    96           96    +5
10   Tsar Bomba           3    56.0    10   7.25     2.5   95    90           90    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Running Rifles 82 95 82 +13 2.5 -
2 Cabinet Shuffle 98 76 101 -25 1.0 -
3 Spin Doctor Line 86 90 86 +4 2.5
4 Duke Of Sussex 99 96 102 -6 1.0 -
5 Fateful Day 92 93 96 -3 2.5 -
6 Home Of The Brave 85 97 90 +7 0.0 -
7 Flashy Apache 98 78 106 -28 0.0 -
8 Fast Love 96 90 102 -12 1.0 -
9 Bey Suyay 91 84 96 -12 1.0 -
10 Tsar Bomba 95 91 90 +1 2.5 -
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