Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING TUESDAY 12 AUGUST CLASSIFIED STAKES (For horses with nett rating of 74 and below)

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Line Horse
Lucky Spirit
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
8 / 13
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    Green Isle           2    55.5    1    0.00     7.0   70    72           72    +2
2    War Launch           2    52.0    2    2.50     7.0   50    65           65    +15
2    Lucky Spirit         3    58.0    2    2.50     10.5  70    70           70    +0
4    Supreme Judge        2    54.5    4    2.55     7.0   76    70           70    -6
5    Notorix              6    58.5    5    2.80     0.0   67    92           92    +25
6    King Rahul           4    52.0    6    3.55     12.0  55    55           55    +0
7    Isn't She Bonny      2    57.5    7    3.80     7.0   72    76           76    +4
8    Russian Empire       5    52.0    8    4.05     0.0   58    79           79    +21
9    Ravilious            3    56.0    9    4.80     10.5  63    66           66    +3
10   Tokyo Medaglia       3    57.5    10   4.85     10.5  74    69           69    -5
11   Lt Alexander         2    60.0    11   8.35     7.0   74    81           81    +7
12   Guarding The Wall    4    60.0    12   15.60    12.0  71    71           71    +0
13   Wordsworth           7    60.0    13   30.60    0.0   72    95           95    +23
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Green Isle 70 77 72 +5 7.0 -
2 War Launch 50 50 65 -15 7.0 -
2 Lucky Spirit Line 70 70 70 ✓ Match 10.5
4 Supreme Judge 76 77 70 +7 7.0 -
5 Notorix 67 68 92 -24 0.0 -
6 King Rahul 55 63 55 +8 12.0 -
7 Isn't She Bonny 72 71 76 -5 7.0 -
8 Russian Empire 58 53 79 -26 0.0 -
9 Ravilious 63 81 66 +15 10.5 -
10 Tokyo Medaglia 74 68 69 -1 10.5 -
11 Lt Alexander 74 72 81 -9 7.0 -
12 Guarding The Wall 71 67 71 -4 12.0 -
13 Wordsworth 72 65 95 -30 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