Official NHA Assessment

Race 4: PLAY SOCCER 6, 10 AND 13 CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Mirren
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
3 / 7
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    Mirren               4    57.5    1    0.00     6.0   71    71           71    +0
2    Pottinger            3    60.0    2    1.00     9.5   70    75           75    +5
3    Flag Bearer          3    58.0    3    3.10     9.5   66    68           68    +2
4    Skyfull              2    51.5    4    5.70     0.0   78    71           71    -7
5    Crusade To Royalty   4    51.5    5    5.75     6.0   59    59           59    +0
6    Sir Tallin           3    58.5    6    7.25     9.5   72    66           66    -6
99   My True North        4    56.0    99   0.00     6.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mirren Line 71 67 71 -4 6.0
2 Pottinger 70 70 75 -5 9.5 -
3 Flag Bearer 66 60 68 -8 9.5 -
4 Skyfull 78 54 71 -17 0.0 -
5 Crusade To Royalty 59 56 59 -3 6.0 -
6 Sir Tallin 72 70 66 +4 9.5 -
99 My True North - 61 68 -7 6.0 -
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