Official NHA Assessment

Race 7: ALTOSTRATUS TECH MR 79 HANDICAP (Open)

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Line Horse
Stanley Park
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    Quest For The Best   4    56.0    1    0.00     2.5   74    70           74    +0
2    Princekresh          4    55.0    2    0.40     2.5   77    68           68    -9
3    Stanley Park         2    57.5    3    0.65     1.0   76    76           76    +0
4    Putins Promise       5    60.0    4    1.85     0.0   79    83           83    +4
5    Super Fast           5    58.5    5    2.45     0.0   78    80           80    +2
6    Rafa's Boy           2    59.0    6    3.25     1.0   79    79           79    +0
7    Time Together        3    57.5    7    5.75     2.0   76    74           74    -2
8    Electric Surge       5    59.0    8    13.25    0.0   77    81           81    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Quest For The Best 74 76 74 +2 2.5 -
2 Princekresh 77 72 68 +4 2.5 -
3 Stanley Park Line 76 69 76 -7 1.0
4 Putins Promise 79 73 83 -10 0.0 -
5 Super Fast 78 83 80 +3 0.0 -
6 Rafa's Boy 79 79 79 ✓ Match 1.0 -
7 Time Together 76 81 74 +7 2.0 -
8 Electric Surge 77 83 81 +2 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