Official NHA Assessment

Race 5: TRACK AND BALL GAMING MR 68 HANDICAP (Open)

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Line Horse
Zoombomber
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 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    Wave Warrior         3    56.0    1    0.00     2.5   60    56           60    +0
2    Zoombomber           2    56.0    2    1.20     0.0   65    65           65    +0
3    Forest Jump          8    59.5    3    1.70     0.0   70    71           71    +1
4    Eventidor            6    61.0    4    2.60     0.0   70    73           73    +3
5    Mr Pigalle           4    61.0    5    4.00     1.0   70    70           70    +0
6    Action Stations      2    62.0    6    5.50     0.0   72    73           73    +1
7    Lou Lou The Legend   3    54.5    7    7.00     2.5   57    53           53    -4
8    Sir William          3    60.0    8    20.50    2.5   68    64           64    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Wave Warrior 60 68 60 +8 2.5 -
2 Zoombomber Line 65 60 65 -5 0.0
3 Forest Jump 70 62 71 -9 0.0 -
4 Eventidor 70 89 73 +16 0.0 -
5 Mr Pigalle 70 68 70 -2 1.0 -
6 Action Stations 72 71 73 -2 0.0 -
7 Lou Lou The Legend 57 59 53 +6 2.5 -
8 Sir William 68 59 64 -5 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