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
Africa's Rock
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
3 / 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    Pembroke             3    60.0    1    0.00     6.0   70    60           60    -10
2    Final Edition        5    60.0    2    0.10     0.0   71    72           72    +1
3    Russian Empire       5    56.5    3    0.60     0.0   63    70           70    +7
4    Kuznetsov            2    56.0    4    0.85     0.0   61    68           68    +7
5    Africa's Rock        4    60.0    5    1.60     3.0   69    69           69    +0
6    Hawk Circle          2    60.0    6    3.85     0.0   68    73           73    +5
7    Rosa Dourada         2    58.0    7    5.35     0.0   69    68           68    -1
99   Humble Tune          4    56.0    99   0.00     3.0   -     58           58    +0
99   Waz Wouter           4    58.0    99   0.00     3.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pembroke 70 79 60 +19 6.0 -
2 Final Edition 71 78 72 +6 0.0 -
3 Russian Empire 63 53 70 -17 0.0 -
4 Kuznetsov 61 61 68 -7 0.0 -
5 Africa's Rock Line 69 70 69 +1 3.0
6 Hawk Circle 68 68 73 -5 0.0 -
7 Rosa Dourada 69 67 68 -1 0.0 -
99 Humble Tune - 58 58 ✓ Match 3.0 -
99 Waz Wouter - 84 62 +22 3.0 -
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