Official NHA Assessment

Race 10: GALLOP FORM CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 82)

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Line Horse
Siberian Winter
Reference for assessment
Exact Matches
3 / 10
Calculated = Official
Close Matches
7 / 10
Within 2 points
Significant Diffs
1 / 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    Act Of Grace         2    57.5    1    0.00     0.0   81    80           80    -1
2    Siberian Winter      3    58.0    2    2.10     2.0   80    80           80    +0
3    Spirit Of Shimla     3    57.5    3    2.70     2.0   81    78           78    -3
4    Izibulo              2    57.5    4    3.10     0.0   76    82           82    +6
5    Zena's Act           2    55.0    5    4.20     0.0   76    76           76    +0
6    Clickbait            3    54.5    6    4.25     2.0   70    71           71    +1
7    One Path             3    57.5    7    8.75     2.0   76    76           76    +0
8    What A Passion       2    57.5    8    10.95    0.0   81    80           80    -1
99   Blue Horizon         4    60.0    99   0.00     1.0   -     83           83    +0
99   Captain's Pride      2    57.5    99   0.00     0.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Act Of Grace 81 85 80 +5 0.0 -
2 Siberian Winter Line 80 80 80 ✓ Match 2.0
3 Spirit Of Shimla 81 80 78 +2 2.0 -
4 Izibulo 76 75 82 -7 0.0 -
5 Zena's Act 76 76 76 ✓ Match 0.0 -
6 Clickbait 70 68 71 -3 2.0 -
7 One Path 76 76 76 ✓ Match 2.0 -
8 What A Passion 81 81 80 +1 0.0 -
99 Blue Horizon - 81 83 -2 1.0 -
99 Captain's Pride - 81 80 +1 0.0 -
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