Official NHA Assessment

Race 4: RACING240 PINNACLE STAKES (Open)

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Line Horse
Silent War
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
3 / 7
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    Navajo Nation        4    52.0    1    0.00     1.0   101   101          101   +0
2    Tamarisk Tree        5    54.0    2    0.30     0.0   105   112          112   +7
3    Silent War           3    52.0    3    3.80     2.5   99    99           99    +0
4    Parisian Walkway     3    56.0    4    4.00     2.5   121   107          111   -10
5    Miss Scaletta        3    47.5    5    4.60     2.5   102   89           92    -10
6    Arumugam             6    52.0    6    15.00    0.0   91    103          103   +12
99   Key Element          4    50.0    99   0.00     1.0   -     97           97    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Navajo Nation 101 104 101 +3 1.0 -
2 Tamarisk Tree 105 105 112 -7 0.0 -
3 Silent War Line 99 91 99 -8 2.5
4 Parisian Walkway 121 113 111 +2 2.5 -
5 Miss Scaletta 102 96 92 +4 2.5 -
6 Arumugam 91 74 103 -29 0.0 -
99 Key Element - 92 97 -5 1.0 -
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