Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens)

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Line Horse
Prime Example
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
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    Top Sail             2    58.0    1    0.00     0.0   77    68           68    -9
2    Prime Example        2    58.0    2    3.25     0.0   71    71           71    +0
3    Sassy                2    54.5    3    3.50     0.0   66    64           64    -2
4    Harold The Duke      3    60.0    4    10.50    7.0   50    58           58    +8
5    Ballycotton          2    54.5    5    12.25    0.0   66    61           61    -5
6    Sky Jewel            2    58.0    6    14.25    0.0   55    68           68    +13
7    Unapologetic         2    54.5    7    14.50    0.0   56    61           61    +5
8    Agia Sofia           3    56.5    8    35.00    7.0   24    51           51    +27
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Top Sail 77 85 68 +17 0.0 -
2 Prime Example Line 71 93 71 +22 0.0
3 Sassy 66 55 64 -9 0.0 -
4 Harold The Duke 50 86 58 +28 7.0 -
5 Ballycotton 66 53 61 -8 0.0 -
6 Sky Jewel 55 52 68 -16 0.0 -
7 Unapologetic 56 51 61 -10 0.0 -
8 Agia Sofia 24 24 51 -27 7.0 -
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