Official NHA Assessment

Race 4: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
Olivia's Way
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
8 / 10
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    Thunee Playa         4    52.0    1    0.00     5.0   103   116          109   +6
2    Olivia's Way         3    54.0    2    0.20     9.0   112   112          112   +0
3    Chestnut Bomber      3    50.0    3    2.40     9.0   97    108          108   +11
4    Two Miles West       3    50.0    4    5.70     9.0   93    104          104   +11
5    Son Of Raj           5    60.0    5    8.10     0.0   119   142          142   +23
6    Royal Edition        4    50.0    6    11.60    5.0   91    112          112   +21
7    Marauding Horde      4    56.0    7    17.60    5.0   112   124          124   +12
8    Future Pearl         2    58.0    8    18.00    0.0   114   138          138   +24
9    Poets Warrior        5    56.0    9    27.75    0.0   110   134          134   +24
10   Hotarubi             4    51.5    10   99.99    5.0   106   115          115   +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thunee Playa 103 107 109 -2 5.0 -
2 Olivia's Way Line 112 114 112 +2 9.0
3 Chestnut Bomber 97 90 108 -18 9.0 -
4 Two Miles West 93 93 104 -11 9.0 -
5 Son Of Raj 119 116 142 -26 0.0 -
6 Royal Edition 91 92 112 -20 5.0 -
7 Marauding Horde 112 112 124 -12 5.0 -
8 Future Pearl 114 114 138 -24 0.0 -
9 Poets Warrior 110 114 134 -20 0.0 -
10 Hotarubi 106 98 115 -17 5.0 -
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