Official NHA Assessment

Race 2: WSB SpinaWina Slots MAIDEN SPECIAL WEIGHTS (For all Maidens)

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Line Horse
Cider House Rules
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
7 / 13
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    Carriacou            3    57.5    1    0.00     5.0   77    75           75    -2
2    Cider House Rules    2    53.0    2    2.50     3.5   69    69           69    +0
3    Aspect               2    57.0    3    3.50     3.5   77    77           77    +0
4    Cybotix              2    50.0    4    3.55     3.5   61    63           63    +2
5    On Board             3    54.5    5    3.65     5.0   72    69           69    -3
6    Green Falcon         2    56.0    6    3.70     3.5   75    75           75    +0
7    Numzaan              2    50.0    7    3.90     3.5   62    63           63    +1
8    Caitlyns Boy         2    53.5    8    4.65     3.5   70    70           70    +0
9    Sir William          3    54.5    9    5.40     5.0   72    69           69    -3
10   Bennelong Point      2    50.0    10   8.65     3.5   63    63           63    +0
11   Logistical           3    60.0    11   9.15     5.0   -     80           80    +80
12   Otis The Brave       3    60.0    12   11.40    5.0   -     80           80    +80
13   Seattlegreenlight    2    60.0    13   11.45    3.5   -     83           83    +83
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Carriacou 77 78 75 +3 5.0 -
2 Cider House Rules Line 69 69 69 ✓ Match 3.5
3 Aspect 77 93 77 +16 3.5 -
4 Cybotix 61 62 63 -1 3.5 -
5 On Board 72 66 69 -3 5.0 -
6 Green Falcon 75 62 75 -13 3.5 -
7 Numzaan 62 79 63 +16 3.5 -
8 Caitlyns Boy 70 71 70 +1 3.5 -
9 Sir William 72 59 69 -10 5.0 -
10 Bennelong Point 63 58 63 -5 3.5 -
11 Logistical - 68 80 -12 5.0 -
12 Otis The Brave - 59 80 -21 5.0 -
13 Seattlegreenlight - 60 83 -23 3.5 -
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