Official NHA Assessment

Race 8: PERFECTLY PLACED D STAKES (For All Horses with a nett rating of 69 & below)

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Line Horse
Gold Index
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
6 / 9
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    Cosmic Rhythm        2    59.0    1    0.00     0.0   61    66           66    +5
2    Golden Grey          4    59.0    2    0.05     2.0   60    62           62    +2
3    Gold Index           3    60.0    3    4.30     4.0   60    60           60    +0
4    Gripen               4    60.5    4    4.35     2.0   63    65           65    +2
5    Lana View            3    53.5    5    6.10     4.0   61    47           51    -10
6    Avignon              4    58.5    6    6.30     2.0   56    61           61    +5
7    Etoilefillante       4    61.5    7    7.30     2.0   62    67           67    +5
8    Dawn's Early Light   3    60.5    8    7.60     4.0   72    61           62    -10
9    Maldano              3    60.0    9    99.99    4.0   60    60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cosmic Rhythm 61 59 66 -7 0.0 -
2 Golden Grey 60 64 62 +2 2.0 -
3 Gold Index Line 60 53 60 -7 4.0
4 Gripen 63 58 65 -7 2.0 -
5 Lana View 61 64 51 +13 4.0 -
6 Avignon 56 61 61 ✓ Match 2.0 -
7 Etoilefillante 62 51 67 -16 2.0 -
8 Dawn's Early Light 72 72 62 +10 4.0 -
9 Maldano 60 60 60 ✓ Match 4.0 -
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