Official NHA Assessment

Race 4: TAB 4RACING APP MAIDEN PLATE (F & M) (For Maiden F&M)

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Line Horse
One Summer
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
5 / 11
Within 2 points
Significant Diffs
3 / 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    Oh Mandy             3    60.0    1    0.00     2.0   63    64           64    +1
2    Touch The Sword      3    60.0    2    1.75     2.0   63    67           67    +4
3    One Summer           2    60.0    3    4.50     0.0   68    68           68    +0
4    Blue Dame            3    60.0    4    6.25     2.0   70    64           64    -6
5    Witching Hour        2    60.0    5    6.50     0.0   68    68           68    +0
6    Alakazam             2    60.0    6    13.00    0.0   65    68           68    +3
7    Rissiepit            3    56.0    7    15.25    2.0   54    56           56    +2
99   Dee Dee's Delight    3    60.0    99   0.00     2.0   -     64           64    +0
99   Champagne Blaze      2    60.0    99   0.00     0.0   -     68           68    +0
99   Lady Majestic        3    60.0    99   0.00     2.0   -     64           64    +0
99   Total Eruption       3    56.0    99   0.00     2.0   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oh Mandy 63 63 64 -1 2.0 -
2 Touch The Sword 63 63 67 -4 2.0 -
3 One Summer Line 68 68 68 ✓ Match 0.0
4 Blue Dame 70 70 64 +6 2.0 -
5 Witching Hour 68 68 68 ✓ Match 0.0 -
6 Alakazam 65 65 68 -3 0.0 -
7 Rissiepit 54 54 56 -2 2.0 -
99 Dee Dee's Delight - 66 64 +2 2.0 -
99 Champagne Blaze - 72 68 +4 0.0 -
99 Lady Majestic - - 64 -64 2.0 -
99 Total Eruption - 69 56 +13 2.0 -
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