Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Misty Metal
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 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    Misty Metal          3    60.0    1    0.00     2.0   67    67           67    +0
2    Chilli Marmalade     5    60.0    2    2.40     0.0   54    71           71    +17
3    Desert Cloud         3    60.0    3    2.65     2.0   74    67           67    -7
4    Cyber Spirit         2    60.0    4    2.95     1.0   68    69           69    +1
5    Miss Munroe          2    60.0    5    3.45     1.0   72    69           69    -3
6    Smart Star           2    57.5    6    8.15     1.0   -     64           64    +64
7    Betty Mo             2    60.0    7    8.65     1.0   66    69           69    +3
8    Endizayo             3    60.0    8    9.85     2.0   66    67           67    +1
9    Potato Salad         4    60.0    9    11.95    2.5   50    66           66    +16
99   Hotaru               2    57.0    99   0.00     1.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Misty Metal Line 67 71 67 +4 2.0
2 Chilli Marmalade 54 48 71 -23 0.0 -
3 Desert Cloud 74 78 67 +11 2.0 -
4 Cyber Spirit 68 62 69 -7 1.0 -
5 Miss Munroe 72 75 69 +6 1.0 -
6 Smart Star - 52 64 -12 1.0 -
7 Betty Mo 66 64 69 -5 1.0 -
8 Endizayo 66 56 67 -11 2.0 -
9 Potato Salad 50 47 66 -19 2.5 -
99 Hotaru - 91 63 +28 1.0 -
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