Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 NOVICE PLATE (Maidens & 1 time Winners)

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Line Horse
Jack In The Green
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
7 / 7
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    On My Honour         3    57.0    1    0.00     8.5   88    48           48    -40
2    Jack In The Green    2    60.0    2    3.50     0.0   72    72           72    +0
3    Amazing Colours      4    57.5    3    7.00     6.0   83    54           73    -10
4    Legal Thriller       4    57.5    4    8.25     6.0   73    54           63    -10
5    Specmagic            3    60.0    5    8.35     8.5   72    54           62    -10
6    Global State         2    57.0    6    9.60     0.0   88    65           78    -10
99   Bryden Bay           2    60.0    99   0.00     0.0   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 On My Honour 88 116 48 +68 8.5 -
2 Jack In The Green Line 72 80 72 +8 0.0
3 Amazing Colours 83 59 73 -14 6.0 -
4 Legal Thriller 73 70 63 +7 6.0 -
5 Specmagic 72 70 62 +8 8.5 -
6 Global State 88 88 78 +10 0.0 -
99 Bryden Bay - 63 71 -8 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