Official NHA Assessment

Race 2: RACING240 FOR RACING. FOR YOU MR 65 HANDICAP (Open)

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Line Horse
Callaburn
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
5 / 6
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    Guy Alexander        3    58.5    1    0.00     9.0   62    44           62    +0
2    Zoombomber           2    59.0    2    0.50     0.0   65    68           68    +3
3    Callaburn            2    60.0    3    2.50     0.0   67    67           67    +0
4    Rainy Season         4    54.0    4    7.00     5.0   53    43           43    -10
5    Future Knight        3    52.5    5    10.00    9.0   50    32           40    -10
6    Cantfoolme           2    55.0    6    16.25    0.0   55    55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Guy Alexander 62 72 62 +10 9.0 -
2 Zoombomber 65 60 68 -8 0.0 -
3 Callaburn Line 67 52 67 -15 0.0
4 Rainy Season 53 56 43 +13 5.0 -
5 Future Knight 50 47 40 +7 9.0 -
6 Cantfoolme 55 51 55 -4 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