Official NHA Assessment

Race 7: POLITICIAN STAKES (Grade 3) (Open to all 3 year olds - Derby Trial)

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Line Horse
Grinkov
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
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    Rockpool             2    54.0    1    0.00     0.0   88    92           92    +4
2    Without Question     5    54.0    2    0.50     0.0   88    97           97    +9
3    At My Command        2    60.0    3    2.75     0.0   114   106          106   -8
4    Grinkov              2    58.5    4    3.50     0.0   102   102          102   +0
5    Narina Trogon        5    54.0    5    5.25     0.0   85    92           92    +7
6    Innamorare           5    55.5    6    6.00     0.0   93    95           95    +2
7    Blackberry Malt      5    54.5    7    8.25     0.0   86    93           93    +7
8    Scalini              2    55.5    8    10.50    0.0   90    95           95    +5
9    Famous And Rich      2    57.0    9    17.75    0.0   96    98           98    +2
10   Dowser               5    54.0    10   19.75    0.0   84    92           92    +8
99   Street Art           3    54.0    99   0.00     6.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rockpool 88 104 92 +12 0.0 -
2 Without Question 88 111 97 +14 0.0 -
3 At My Command 114 116 106 +10 0.0 -
4 Grinkov Line 102 87 102 -15 0.0
5 Narina Trogon 85 102 92 +10 0.0 -
6 Innamorare 93 91 95 -4 0.0 -
7 Blackberry Malt 86 82 93 -11 0.0 -
8 Scalini 90 70 95 -25 0.0 -
9 Famous And Rich 96 66 98 -32 0.0 -
10 Dowser 84 84 92 -8 0.0 -
99 Street Art - 78 80 -2 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