Official NHA Assessment

Race 3: RACING TODAY MAIDEN HANDICAP (F & M) (For Maiden F & M with 3 or more runs)

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Line Horse
Bella Boop Boop
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 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    Concordia            2    56.5    1    0.00     7.0   73    66           73    +0
2    Bella Boop Boop      3    56.0    2    0.10     10.5  58    58           58    +0
3    Empress Wu           3    60.0    3    2.10     10.5  66    66           66    +0
4    Smart Star           2    55.0    4    5.90     7.0   70    63           63    -7
5    Amber Eyes           3    53.0    5    6.80     10.5  52    52           52    +0
6    Cyber Spirit         2    58.0    6    7.00     7.0   62    69           69    +7
7    Chilli Marmalade     5    51.5    7    7.25     0.0   57    70           70    +13
8    The Bonny            2    52.0    8    15.75    7.0   30    57           57    +27
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Concordia 73 69 73 -4 7.0 -
2 Bella Boop Boop Line 58 58 58 ✓ Match 10.5
3 Empress Wu 66 61 66 -5 10.5 -
4 Smart Star 70 52 63 -11 7.0 -
5 Amber Eyes 52 50 52 -2 10.5 -
6 Cyber Spirit 62 62 69 -7 7.0 -
7 Chilli Marmalade 57 48 70 -22 0.0 -
8 The Bonny 30 30 57 -27 7.0 -
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