Official NHA Assessment

Race 6: LUCKY FISH LIGHTNING ROULETTE D STAKES (For All Horses)

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Line Horse
Royal Dawn
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
5 / 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    Lovers Lane          2    55.5    1    0.00     0.0   54    59           59    +5
2    Act Of Grace         2    62.0    2    0.05     0.0   81    72           72    -9
3    Royal Dawn           3    56.0    3    1.80     4.0   55    55           55    +0
4    Kliptown             3    61.5    4    1.90     4.0   83    66           73    -10
5    Ain't No Sunshine    3    56.5    5    2.65     4.0   65    55           55    -10
6    Ischyro              3    57.0    6    2.95     4.0   57    56           56    -1
7    Tres Chic            4    49.0    7    3.25     2.5   52    43           43    -9
8    Typically French     4    51.5    8    5.75     2.5   53    46           46    -7
9    Mont Loisir          4    61.5    9    13.25    2.5   69    66           66    -3
99   The Night Ferry      3    60.0    99   0.00     4.0   -     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 Lovers Lane 54 58 59 -1 0.0 -
2 Act Of Grace 81 81 72 +9 0.0 -
3 Royal Dawn Line 55 55 55 ✓ Match 4.0
4 Kliptown 83 82 73 +9 4.0 -
5 Ain't No Sunshine 65 62 55 +7 4.0 -
6 Ischyro 57 54 56 -2 4.0 -
7 Tres Chic 52 52 43 +9 2.5 -
8 Typically French 53 52 46 +6 2.5 -
9 Mont Loisir 69 68 66 +2 2.5 -
99 The Night Ferry - 62 60 +2 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