Official NHA Assessment

Race 6: TABGOLD SCORE 6 SCORE 8 SCORE 10 MAIDEN PLATE (For all Maidens)

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Line Horse
Rollo The Viking
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Hoodwinked           3    60.0    1    0.00     8.0   66    79           72    +6
2    Rainwater            2    57.0    2    0.20     0.0   75    89           89    +14
3    Rollo The Viking     3    57.0    3    1.70     8.0   78    78           78    +0
4    Iron Monger          2    60.0    4    17.40    0.0   64    95           95    +31
5    War Lover            3    53.0    5    18.20    8.0   -     65           65    +65
6    Warrior Class        2    57.0    6    19.00    0.0   61    89           89    +28
7    Tidal Rock           4    60.0    7    99.99    4.5   -     86           86    +86
99   Priceless Pearl      2    57.0    99   0.00     0.0   -     89           89    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hoodwinked 66 67 72 -5 8.0 -
2 Rainwater 75 79 89 -10 0.0 -
3 Rollo The Viking Line 78 96 78 +18 8.0
4 Iron Monger 64 64 95 -31 0.0 -
5 War Lover - 55 65 -10 8.0 -
6 Warrior Class 61 61 89 -28 0.0 -
7 Tidal Rock - - 86 -86 4.5 -
99 Priceless Pearl - 64 89 -25 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