Official NHA Assessment

Race 5: TREVOR LANGE MEMORIAL MR 66 HANDICAP (Open)

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Line Horse
Guy Alexander
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
2 / 10
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    Kakiebos             3    59.5    1    0.00     3.5   72    61           72    +0
2    Nuclear Force        5    58.5    2    0.25     0.0   63    66           66    +3
3    Guy Alexander        3    57.5    3    2.00     3.5   61    61           61    +0
4    Go Dream Machine     3    48.5    4    2.50     3.5   51    43           43    -8
5    In A Blue Moon       2    60.5    5    5.50     0.0   74    70           70    -4
6    Martinique           2    58.0    6    6.75     0.0   69    65           65    -4
7    Flag Bearer          3    59.5    7    7.50     3.5   65    61           61    -4
8    Coromandel           4    56.5    8    14.00    1.0   59    60           60    +1
9    Zoombomber           2    56.0    9    15.00    0.0   65    61           61    -4
99   Fiery Cliffs         3    57.0    99   0.00     3.5   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kakiebos 72 75 72 +3 3.5 -
2 Nuclear Force 63 61 66 -5 0.0 -
3 Guy Alexander Line 61 72 61 +11 3.5
4 Go Dream Machine 51 52 43 +9 3.5 -
5 In A Blue Moon 74 74 70 +4 0.0 -
6 Martinique 69 66 65 +1 0.0 -
7 Flag Bearer 65 60 61 -1 3.5 -
8 Coromandel 59 59 60 -1 1.0 -
9 Zoombomber 65 60 61 -1 0.0 -
99 Fiery Cliffs - 60 56 +4 3.5 -
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