Official NHA Assessment

Race 3: WOODRUFF RACING SYNDICATE MAIDEN PLATE (For all Maidens)

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Line Horse
Dubbelosix
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    Tenpenny             3    60.0    1    0.00     4.0   80    81           78    -2
2    War Hawk             3    60.0    2    3.00     4.0   75    83           83    +8
3    Dubbelosix           3    60.0    3    3.40     4.0   82    82           82    +0
4    Green Okra           2    60.0    4    7.40     0.0   73    89           89    +16
5    Brigadier Billy      3    60.0    5    8.90     4.0   -     81           81    +81
6    Count William        3    60.0    6    9.30     4.0   72    81           81    +9
7    Naretoi              2    60.0    7    9.50     0.0   -     89           89    +89
8    Marine Merchant      3    60.0    8    19.50    4.0   73    81           81    +8
9    Greenlight Jet       3    60.0    9    99.99    4.0   45    81           81    +36
99   Manikongo (AUS)      3    60.0    99   0.00     4.0   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tenpenny 80 105 78 +27 4.0 -
2 War Hawk 75 75 83 -8 4.0 -
3 Dubbelosix Line 82 84 82 +2 4.0
4 Green Okra 73 66 89 -23 0.0 -
5 Brigadier Billy - 77 81 -4 4.0 -
6 Count William 72 71 81 -10 4.0 -
7 Naretoi - 73 89 -16 0.0 -
8 Marine Merchant 73 66 81 -15 4.0 -
9 Greenlight Jet 45 44 81 -37 4.0 -
99 Manikongo (AUS) - 55 81 -26 4.0 -
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