Official NHA Assessment

Race 4: GREYVILLE CONVENTION CENTRE MAIDEN HANDICAP (For Maidens with 3 or more runs BM at 60kg = 68)

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Line Horse
Brave Bomber
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Chill In The Air     3    55.5    1    0.00     9.0   73    65           73    +0
2    Brave Bomber         3    55.5    2    2.20     9.0   70    70           70    +0
3    Racing Boy           2    52.0    3    11.60    0.0   60    76           76    +16
4    Summer Lightning     3    48.5    4    18.80    9.0   46    51           51    +5
5    Exodus Song          2    48.0    5    26.90    0.0   61    68           68    +7
6    Amor Fati            2    60.0    6    30.30    0.0   79    92           92    +13
7    Nantes Festival      2    52.5    7    30.55    0.0   56    77           77    +21
8    Amber Sky            2    59.0    8    72.55    0.0   61    90           90    +29
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chill In The Air 73 82 73 +9 9.0 -
2 Brave Bomber Line 70 81 70 +11 9.0
3 Racing Boy 60 60 76 -16 0.0 -
4 Summer Lightning 46 46 51 -5 9.0 -
5 Exodus Song 61 43 68 -25 0.0 -
6 Amor Fati 79 92 92 ✓ Match 0.0 -
7 Nantes Festival 56 51 77 -26 0.0 -
8 Amber Sky 61 58 90 -32 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