Official NHA Assessment

Race 6: TRACK & BALL GAMING MR 70 HANDICAP (Open)

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Line Horse
Rugger Lover
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 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    Chara Sands          3    60.5    1    0.00     2.5   74    72           74    +0
2    Rugger Lover         2    59.5    2    1.40     1.5   72    72           72    +0
3    Mask On              3    61.5    3    1.80     2.5   73    74           74    +1
4    Granddaddy Purple    3    52.0    4    2.30     2.5   51    55           55    +4
5    Brave Voyager        3    56.0    5    2.70     2.5   62    63           63    +1
6    Cotton Ron           6    58.0    6    2.85     0.0   66    72           72    +6
7    Inafix               4    57.0    7    4.15     0.0   67    70           70    +3
8    Anotherdayinafrica   6    49.5    8    4.55     0.0   57    55           55    -2
9    Servilius            3    58.5    9    4.75     2.5   67    68           68    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chara Sands 74 70 74 -4 2.5 -
2 Rugger Lover Line 72 79 72 +7 1.5
3 Mask On 73 52 74 -22 2.5 -
4 Granddaddy Purple 51 50 55 -5 2.5 -
5 Brave Voyager 62 51 63 -12 2.5 -
6 Cotton Ron 66 59 72 -13 0.0 -
7 Inafix 67 69 70 -1 0.0 -
8 Anotherdayinafrica 57 49 55 -6 0.0 -
9 Servilius 67 65 68 -3 2.5 -
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