Official NHA Assessment

Race 10: MASTER ARCHIE AT STUD PINNACLE STAKES (Open)

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Line Horse
Celtic Rumours
Reference for assessment
Exact Matches
1 / 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    Zinovi               2    52.0    1    0.00     0.0   108   102          102   -6
2    Celtic Rumours       5    52.0    2    1.00     0.0   106   106          106   +0
3    Forever Mine         4    54.0    3    4.25     1.0   109   105          105   -4
4    Mercantour           5    54.0    4    5.00     0.0   108   106          106   -2
5    Atticus Finch        5    56.0    5    5.25     0.0   111   110          110   -1
6    Juliet Tango         6    50.0    6    5.75     0.0   98    98           98    +0
7    Eye Of The Prophet   2    58.5    7    7.00     0.0   119   115          115   -4
8    Mujbar (GB)          6    52.0    8    8.50     0.0   105   102          102   -3
9    Laguna Verde         5    50.0    9    11.75    0.0   98    98           98    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Zinovi 108 120 102 +18 0.0 -
2 Celtic Rumours Line 106 104 106 -2 0.0
3 Forever Mine 109 105 105 ✓ Match 1.0 -
4 Mercantour 108 113 106 +7 0.0 -
5 Atticus Finch 111 127 110 +17 0.0 -
6 Juliet Tango 98 81 98 -17 0.0 -
7 Eye Of The Prophet 119 108 115 -7 0.0 -
8 Mujbar (GB) 105 103 102 +1 0.0 -
9 Laguna Verde 98 86 98 -12 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