Official NHA Assessment

Race 2: STUART FERRIE RACING MR 76 HANDICAP (Open)

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Line Horse
Stanley Park
Reference for assessment
Exact Matches
1 / 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    Sea Vista            2    58.0    1    0.00     6.5   80    80           80    +0
2    Philispiel           7    59.0    2    0.60     0.0   77    95           95    +18
3    Stanley Park         2    58.0    3    0.70     6.5   80    80           80    +0
4    Super Fast           5    61.0    4    4.10     0.0   78    99           99    +21
5    Princekresh          4    60.5    5    4.30     11.0  77    76           76    -1
6    Quest For The Best   4    60.5    6    4.70     11.0  77    76           76    -1
7    Valiente             5    59.0    7    4.95     0.0   74    95           95    +21
99   Dontshootthebarman   5    58.5    99   0.00     0.0   -     94           94    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sea Vista 80 83 80 +3 6.5 -
2 Philispiel 77 70 95 -25 0.0 -
3 Stanley Park Line 80 69 80 -11 6.5
4 Super Fast 78 83 99 -16 0.0 -
5 Princekresh 77 72 76 -4 11.0 -
6 Quest For The Best 77 76 76 ✓ Match 11.0 -
7 Valiente 74 75 95 -20 0.0 -
99 Dontshootthebarman - 93 94 -1 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