Official NHA Assessment

Race 8: #YOUCANBETONUS! MR 66 HANDICAP (Open)

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Line Horse
Instant Attraction
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
5 / 11
Within 2 points
Significant Diffs
2 / 11
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    Hat Furious          4    52.0    1    0.00     1.5   53    50           53    +0
2    Instant Attraction   3    57.0    2    2.50     3.5   60    60           60    +0
3    Crepuscolo           4    56.0    3    4.25     1.5   58    60           60    +2
4    Casus Belli          3    57.5    4    4.85     3.5   64    57           57    -7
5    Nuclear Force        5    55.0    5    5.05     0.0   61    59           59    -2
6    Itsnowornever        5    59.0    6    12.75    0.0   64    67           67    +3
7    Thambi               5    54.5    7    13.50    0.0   55    58           58    +3
8    Six Of All           2    60.5    8    15.75    0.0   74    70           70    -4
9    Red Sparrow          3    54.5    9    16.75    3.5   55    51           51    -4
10   Gift Of Royal        3    56.5    10   20.25    3.5   58    55           55    -3
11   Flag Bearer          3    55.5    11   99.99    3.5   60    53           53    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hat Furious 53 58 53 +5 1.5 -
2 Instant Attraction Line 60 60 60 ✓ Match 3.5
3 Crepuscolo 58 58 60 -2 1.5 -
4 Casus Belli 64 64 57 +7 3.5 -
5 Nuclear Force 61 60 59 +1 0.0 -
6 Itsnowornever 64 64 67 -3 0.0 -
7 Thambi 55 55 58 -3 0.0 -
8 Six Of All 74 71 70 +1 0.0 -
9 Red Sparrow 55 54 51 +3 3.5 -
10 Gift Of Royal 58 56 55 +1 3.5 -
11 Flag Bearer 60 60 53 +7 3.5 -
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