Official NHA Assessment

Race 7: TAB 4RACING APP FM 91 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Special Variety
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
2 / 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    Roha                 4    57.0    1    0.00     6.0   85    88           85    +0
2    Rosaprima            4    50.0    2    0.50     6.0   79    79           79    +0
3    Midnight Gem         4    60.5    3    1.10     6.0   92    99           99    +7
4    Special Variety      3    52.0    4    2.25     8.5   76    76           76    +0
5    Linganomore          3    54.0    5    3.50     8.5   80    78           78    -2
6    Mill Queen           5    61.0    6    5.50     0.0   93    108          108   +15
7    Twice The Trip       3    52.5    7    9.00     8.5   76    74           74    -2
99   Sacred Lotus         4    53.0    99   0.00     6.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Roha 85 89 85 +4 6.0 -
2 Rosaprima 79 75 79 -4 6.0 -
3 Midnight Gem 92 81 99 -18 6.0 -
4 Special Variety Line 76 74 76 -2 8.5
5 Linganomore 80 73 78 -5 8.5 -
6 Mill Queen 93 90 108 -18 0.0 -
7 Twice The Trip 76 73 74 -1 8.5 -
99 Sacred Lotus - 79 80 -1 6.0 -
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