Official NHA Assessment

Race 7: 4RACING.TV FM 82 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Castle Durrow
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
8 / 11
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    Snow Palace          5    58.0    1    0.00     0.0   78    77           78    +0
2    Pashasha             3    51.0    2    0.50     2.5   72    65           65    -7
3    Castle Durrow        4    58.5    3    3.25     1.0   79    79           79    +0
4    Astral Plane         4    53.0    4    3.55     1.0   68    68           68    +0
5    Kayla's Dream        5    52.0    5    3.75     0.0   66    67           67    +1
6    Keepingthepeace      4    54.5    6    4.00     1.0   71    70           70    -1
7    Stunning Kitten      5    53.5    7    5.35     0.0   69    68           68    -1
8    Princess Kesh        3    58.0    8    6.45     2.5   83    72           73    -10
9    Go Dream Machine     3    54.0    9    7.15     2.5   75    64           65    -10
10   Damova               3    53.0    10   7.35     2.5   73    62           63    -10
11   Wisteria Avenue      3    60.0    11   10.75    2.5   87    76           77    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Snow Palace 78 87 78 +9 0.0 -
2 Pashasha 72 57 65 -8 2.5 -
3 Castle Durrow Line 79 71 79 -8 1.0
4 Astral Plane 68 62 68 -6 1.0 -
5 Kayla's Dream 66 61 67 -6 0.0 -
6 Keepingthepeace 71 66 70 -4 1.0 -
7 Stunning Kitten 69 66 68 -2 0.0 -
8 Princess Kesh 83 77 73 +4 2.5 -
9 Go Dream Machine 75 52 65 -13 2.5 -
10 Damova 73 85 63 +22 2.5 -
11 Wisteria Avenue 87 85 77 +8 2.5 -
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