Official NHA Assessment

Race 5: PLAY SOCCER 6, 10 AND 13 MR 84 APPRENTICE HANDICAP (Open)

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Line Horse
Arlington Action
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
4 / 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    Dark Silver          4    53.0    1    0.00     1.5   78    69           78    +0
2    Dj Junior            3    59.0    2    0.30     3.5   82    84           84    +2
3    Arlington Action     6    53.5    3    3.05     0.0   76    76           76    +0
4    Taxhaven             4    51.5    4    4.15     1.5   75    68           68    -7
5    Diesel's Shadow      4    56.0    5    8.35     1.5   81    75           75    -6
6    Birthright           4    56.5    6    9.05     1.5   85    76           76    -9
7    Circle Of Grace      4    48.5    7    11.25    1.5   69    60           60    -9
99   Hearts On Fire       3    52.0    99   0.00     3.5   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dark Silver 78 84 78 +6 1.5 -
2 Dj Junior 82 79 84 -5 3.5 -
3 Arlington Action Line 76 73 76 -3 0.0
4 Taxhaven 75 96 68 +28 1.5 -
5 Diesel's Shadow 81 80 75 +5 1.5 -
6 Birthright 85 95 76 +19 1.5 -
7 Circle Of Grace 69 51 60 -9 1.5 -
99 Hearts On Fire - 65 63 +2 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