Official NHA Assessment

Race 2: GREYVILLE CONVENTION CENTRE OPEN MAIDEN (For all Maidens)

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Line Horse
Gripen
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
5 / 12
Within 2 points
Significant Diffs
6 / 12
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    White Seahorse       2    59.5    1    0.00     0.0   74    68           68    -6
2    Gripen               4    55.0    2    2.10     1.0   60    60           60    +0
3    El Capitan           2    61.0    3    3.60     0.0   77    72           72    -5
4    King Celtillus       3    58.5    4    5.50     2.5   72    61           62    -10
5    O Space O            2    59.0    5    5.55     0.0   73    67           67    -6
6    Irish Anthem         3    56.5    6    5.75     2.5   68    57           58    -10
7    Augrabies            3    56.5    7    11.05    2.5   68    57           58    -10
8    Remus From Rome      3    61.0    8    23.75    2.5   -     66           66    +66
9    Fern Hill            3    54.0    9    99.99    2.5   63    52           53    -10
99   Green Mile           4    58.0    99   0.00     1.0   -     63           63    +0
99   Mont Tremblant       3    56.0    99   0.00     2.5   -     56           56    +0
99   Run For Peace        3    47.5    99   0.00     2.5   -     39           39    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 White Seahorse 74 81 68 +13 0.0 -
2 Gripen Line 60 58 60 -2 1.0
3 El Capitan 77 70 72 -2 0.0 -
4 King Celtillus 72 70 62 +8 2.5 -
5 O Space O 73 59 67 -8 0.0 -
6 Irish Anthem 68 60 58 +2 2.5 -
7 Augrabies 68 56 58 -2 2.5 -
8 Remus From Rome - 33 66 -33 2.5 -
9 Fern Hill 63 63 53 +10 2.5 -
99 Green Mile - 66 63 +3 1.0 -
99 Mont Tremblant - 56 56 ✓ Match 2.5 -
99 Run For Peace - 54 39 +15 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