Official NHA Assessment

Race 2: TAB TELEBET 0861 000 822 MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Lady Of Arc
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
8 / 11
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    Lady Of Arc          2    60.0    1    0.00     3.0   76    76           76    +0
2    Green Extreme        3    60.0    2    1.40     4.5   -     73           73    +73
3    Bilingual            4    60.0    3    3.65     5.0   60    72           72    +12
4    Cyber Spirit         2    60.0    4    4.05     3.0   68    76           76    +8
5    Misty Metal          3    60.0    5    5.45     4.5   -     73           73    +73
6    Act On Snow          3    60.0    6    5.85     4.5   72    73           73    +1
7    Blazing Sky          3    60.0    7    6.55     4.5   69    73           73    +4
8    World Tour           3    60.0    8    9.95     4.5   -     73           73    +73
9    Final Hope           3    60.0    9    10.75    4.5   -     73           73    +73
10   Chasing The Crown    3    56.0    10   15.00    4.5   52    65           65    +13
99   Empress Wu           3    60.0    99   0.00     4.5   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Of Arc Line 76 76 76 ✓ Match 3.0
2 Green Extreme - 73 73 ✓ Match 4.5 -
3 Bilingual 60 60 72 -12 5.0 -
4 Cyber Spirit 68 62 76 -14 3.0 -
5 Misty Metal - 71 73 -2 4.5 -
6 Act On Snow 72 64 73 -9 4.5 -
7 Blazing Sky 69 46 73 -27 4.5 -
8 World Tour - 66 73 -7 4.5 -
9 Final Hope - 56 73 -17 4.5 -
10 Chasing The Crown 52 46 65 -19 4.5 -
99 Empress Wu - 61 73 -12 4.5 -
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