Official NHA Assessment

Race 5: PLAY SOCCER 6, 10 AND 13 MIDDLE STAKES (For horses with nett rating of 92 and below)

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Line Horse
Arlington Action
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 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    Light Of The Moon    3    57.5    1    0.00     3.5   92    76           76    -16
2    Arlington Action     6    50.5    2    1.50     0.0   74    74           74    +0
3    Rule Book            6    54.0    3    2.50     0.0   75    80           80    +5
4    Afraad               8    58.0    4    7.50     0.0   82    84           84    +2
5    Snow Palace          5    57.5    5    8.25     0.0   83    83           83    +0
6    Madabout Fashion     3    54.0    6    12.00    3.5   78    69           69    -9
7    Have A Go Jo         4    58.0    7    16.25    1.0   80    82           82    +2
8    Nartjie              4    60.0    8    33.00    1.0   85    86           86    +1
99   Leeson               3    52.5    99   0.00     3.5   -     66           66    +0
99   So Long Spring       7    52.0    99   0.00     0.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Light Of The Moon 92 107 76 +31 3.5 -
2 Arlington Action Line 74 73 74 -1 0.0
3 Rule Book 75 92 80 +12 0.0 -
4 Afraad 82 79 84 -5 0.0 -
5 Snow Palace 83 87 83 +4 0.0 -
6 Madabout Fashion 78 72 69 +3 3.5 -
7 Have A Go Jo 80 70 82 -12 1.0 -
8 Nartjie 85 81 86 -5 1.0 -
99 Leeson - 72 66 +6 3.5 -
99 So Long Spring - 51 72 -21 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