Official NHA Assessment

Race 5: 4RACING.TV MR 71 HANDICAP (Open)

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Line Horse
Wondering Star
Reference for assessment
Exact Matches
2 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
5 / 8
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    Parker Getrix        4    52.5    1    0.00     7.0   56    61           56    +0
2    Sir Tallin           3    57.0    2    0.20     10.0  70    64           64    -6
3    Wondering Star       3    58.0    3    1.50     10.0  69    69           69    +0
4    Chasing Mavericks    4    57.5    4    2.00     7.0   66    74           74    +8
5    Leshawes             3    60.0    5    2.25     10.0  73    73           73    +0
6    Mingshi              4    54.5    6    3.75     7.0   60    66           66    +6
7    Jackman              8    52.0    7    4.00     0.0   40    75           75    +35
8    Rattle Bag           6    57.0    8    6.75     0.0   67    84           84    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Parker Getrix 56 56 56 ✓ Match 7.0 -
2 Sir Tallin 70 70 64 +6 10.0 -
3 Wondering Star Line 69 67 69 -2 10.0
4 Chasing Mavericks 66 65 74 -9 7.0 -
5 Leshawes 73 73 73 ✓ Match 10.0 -
6 Mingshi 60 56 66 -10 7.0 -
7 Jackman 40 40 75 -35 0.0 -
8 Rattle Bag 67 71 84 -13 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