Official NHA Assessment

Race 6: PINNACLE PLATE 100 (Race for all horses)

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Line Horse
Wantage
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 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    Dindingwe            4    57.0    1    0.00     2.5   97    82           82    -15
2    Holy Land            6    60.0    2    1.00     0.0   96    97           97    +1
3    Wantage              8    58.0    3    2.00     0.0   92    92           92    +0
4    Armstrong            6    58.0    4    2.50     0.0   90    91           91    +1
5    Heir Line            8    51.0    5    2.75     0.0   81    77           77    -4
6    Three To Tango       6    56.0    6    5.25     0.0   88    85           85    -3
99   Captain Of Tortuga   6    60.0    99   0.00     0.0   -     93           93    +0
99   Yarraman             7    54.0    99   0.00     0.0   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dindingwe 97 95 82 +13 2.5 -
2 Holy Land 96 97 97 ✓ Match 0.0 -
3 Wantage Line 92 78 92 -14 0.0
4 Armstrong 90 89 91 -2 0.0 -
5 Heir Line 81 81 77 +4 0.0 -
6 Three To Tango 88 87 85 +2 0.0 -
99 Captain Of Tortuga - 97 93 +4 0.0 -
99 Yarraman - 92 81 +11 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