Official NHA Assessment

Race 3: WSB SLOTS AT ITS BEST MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Hop Hop Spinnekop
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 9
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    Hop Hop Spinnekop    3    60.0    1    0.00     2.0   69    69           69    +0
2    Greek Heiress        2    60.0    2    0.30     0.0   68    78           78    +10
3    Splash Of Love       2    58.5    3    1.40     0.0   69    73           73    +4
4    Brightsunnyday       3    60.0    4    1.70     2.0   66    72           72    +6
5    Annie's Song         3    60.0    5    2.50     2.0   63    71           71    +8
6    Dancing In Demark    2    57.5    6    2.70     0.0   67    70           70    +3
7    Crimson Typhoon      3    60.0    7    4.90     2.0   60    69           69    +9
8    Skyline Bell         3    60.0    8    6.10     2.0   67    69           69    +2
9    A M C Rose           4    60.0    9    30.70    0.5   -     72           72    +72
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hop Hop Spinnekop Line 69 69 69 ✓ Match 2.0
2 Greek Heiress 68 68 78 -10 0.0 -
3 Splash Of Love 69 69 73 -4 0.0 -
4 Brightsunnyday 66 66 72 -6 2.0 -
5 Annie's Song 63 63 71 -8 2.0 -
6 Dancing In Demark 67 67 70 -3 0.0 -
7 Crimson Typhoon 60 60 69 -9 2.0 -
8 Skyline Bell 67 67 69 -2 2.0 -
9 A M C Rose - - 72 -72 0.5 -
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