Official NHA Assessment

Race 2: LUCKY FISH DIAMOND RISE MAIDEN PLATE (For all Maidens)

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Line Horse
Roy's Glorious
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
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    Place Of Practice    3    60.0    1    0.00     2.0   82    59           59    -23
2    Royale Jacket        2    60.0    2    0.60     0.0   71    68           68    -3
3    Princess Trippi      3    57.0    3    2.80     2.0   71    55           61    -10
4    Putthelightsout      2    56.0    4    2.85     0.0   -     57           57    +57
5    Roy's Glorious       4    60.0    5    3.10     0.5   64    64           64    +0
6    Harpa                2    57.0    6    7.10     0.0   71    57           61    -10
7    Black Platina        2    57.5    7    7.60     0.0   66    58           58    -8
8    Force Industrielle   3    60.0    8    24.00    2.0   -     59           59    +59
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Place Of Practice 82 82 59 +23 2.0 -
2 Royale Jacket 71 73 68 +5 0.0 -
3 Princess Trippi 71 70 61 +9 2.0 -
4 Putthelightsout - - 57 - 0.0 -
5 Roy's Glorious Line 64 64 64 ✓ Match 0.5
6 Harpa 71 68 61 +7 0.0 -
7 Black Platina 66 64 58 +6 0.0 -
8 Force Industrielle - - 59 -59 2.0 -
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