Official NHA Assessment

Race 5: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
Purple Pitcher
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 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    Tamarisk Tree        5    50.5    1    0.00     0.0   100   101          101   +1
2    Royal Edition        4    50.0    2    1.00     2.0   90    100          100   +10
3    La Moohal            4    50.0    3    1.20     2.0   96    100          100   +4
4    Purple Pitcher       4    62.0    4    1.45     2.0   123   123          123   +0
5    Radicchio            5    52.0    5    2.05     0.0   103   107          107   +4
6    Master Christmas     4    50.5    6    5.25     2.0   98    97           97    -1
7    Hotarubi             4    56.0    7    14.25    2.0   112   108          108   -4
99   Champagne Cocktail   4    50.0    99   0.00     2.0   -     96           96    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tamarisk Tree 100 105 101 +4 0.0 -
2 Royal Edition 90 92 100 -8 2.0 -
3 La Moohal 96 93 100 -7 2.0 -
4 Purple Pitcher Line 123 121 123 -2 2.0
5 Radicchio 103 100 107 -7 0.0 -
6 Master Christmas 98 94 97 -3 2.0 -
7 Hotarubi 112 98 108 -10 2.0 -
99 Champagne Cocktail - 98 96 +2 2.0 -
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