Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (Open)

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Line Horse
Green Haze
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Ocean Warrior        3    56.0    1    0.00     10.0  97    71           71    -26
2    Youcanthurrylove     5    56.0    2    0.10     0.0   95    91           91    -4
3    Rouge Allure         8    56.5    3    3.00     0.0   103   95           95    -8
4    Green Haze           6    58.0    4    3.50     0.0   98    98           98    +0
5    Sudden Star          5    56.0    5    4.25     0.0   95    93           93    -2
6    Opera Glass          4    53.0    6    7.25     7.0   101   71           91    -10
7    London Roads         3    56.5    7    10.25    10.0  100   72           90    -10
8    Dr Doolittle         4    60.0    8    24.00    7.0   103   85           93    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ocean Warrior 97 95 71 +24 10.0 -
2 Youcanthurrylove 95 86 91 -5 0.0 -
3 Rouge Allure 103 103 95 +8 0.0 -
4 Green Haze Line 98 98 98 ✓ Match 0.0
5 Sudden Star 95 86 93 -7 0.0 -
6 Opera Glass 101 81 91 -10 7.0 -
7 London Roads 100 78 90 -12 10.0 -
8 Dr Doolittle 103 103 93 +10 7.0 -
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