Official NHA Assessment

Race 5: Racing Distribution PINNACLE STAKES (For all horses)

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Line Horse
Tread Swiftly
Reference for assessment
Exact Matches
0 / 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    Tempting Fate        4    58.5    1    0.00     11.0  108   102          102   -6
2    Captain Fontane      4    58.5    2    0.20     11.0  106   102          102   -4
3    Tread Swiftly        4    56.0    3    0.80     11.0  97    97           97    +0
4    Hawker Typhoon       4    51.5    4    2.70     11.0  100   88           90    -10
5    Ishnana              7    51.0    5    2.75     0.0   95    109          109   +14
6    Gallic Chief         3    55.5    6    3.25     9.5   102   99           99    -3
7    Chantyman            7    62.0    7    7.35     0.0   117   131          131   +14
8    Chattertons Keeper   5    57.0    8    7.45     0.0   100   121          121   +21
9    Danilo Danilovitch   3    57.0    9    15.25    9.5   103   102          102   -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tempting Fate 108 103 102 +1 11.0 -
2 Captain Fontane 106 109 102 +7 11.0 -
3 Tread Swiftly Line 97 90 97 -7 11.0
4 Hawker Typhoon 100 89 90 -1 11.0 -
5 Ishnana 95 83 109 -26 0.0 -
6 Gallic Chief 102 98 99 -1 9.5 -
7 Chantyman 117 114 131 -17 0.0 -
8 Chattertons Keeper 100 98 121 -23 0.0 -
9 Danilo Danilovitch 103 89 102 -13 9.5 -
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