Official NHA Assessment

Race 9: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
William Robertson
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
10 / 13
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    Almond Sea           3    56.0    1    0.00     5.0   115   102          102   -13
2    Elegant Ice          4    52.0    2    2.10     6.0   108   92           98    -10
3    William Robertson    6    62.0    3    3.35     0.0   124   124          124   +0
4    Jerusalema Rain      2    50.0    4    3.55     3.5   101   93           93    -8
5    Pistol Pete          3    60.0    5    3.85     5.0   119   110          110   -9
6    Radicchio            5    50.5    6    4.95     0.0   101   101          101   +0
7    Greaterix            3    58.0    7    5.25     5.0   114   106          106   -8
8    Chasing Happiness    3    56.0    8    5.45     5.0   114   102          104   -10
9    Fatal Flaw           3    58.0    9    6.25     5.0   120   106          110   -10
10   Barbaresco           4    60.0    10   6.85     6.0   120   108          110   -10
11   Magic Tattoo         5    50.0    11   7.75     0.0   98    100          100   +2
12   Whispering Death     2    48.5    12   11.00    3.5   101   90           91    -10
13   Dreamland            4    54.0    13   11.50    6.0   106   96           96    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Almond Sea 115 119 102 +17 5.0 -
2 Elegant Ice 108 108 98 +10 6.0 -
3 William Robertson Line 124 124 124 ✓ Match 0.0
4 Jerusalema Rain 101 100 93 +7 3.5 -
5 Pistol Pete 119 118 110 +8 5.0 -
6 Radicchio 101 100 101 -1 0.0 -
7 Greaterix 114 110 106 +4 5.0 -
8 Chasing Happiness 114 110 104 +6 5.0 -
9 Fatal Flaw 120 118 110 +8 5.0 -
10 Barbaresco 120 116 110 +6 6.0 -
11 Magic Tattoo 98 93 100 -7 0.0 -
12 Whispering Death 101 99 91 +8 3.5 -
13 Dreamland 106 103 96 +7 6.0 -
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