Official NHA Assessment

Race 4: RACING240 FM 84 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Blue Duchess
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
4 / 13
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    Meercat              5    55.5    1    0.00     0.0   75    76           75    +0
2    Irish Willow         4    59.0    2    0.50     2.0   82    84           84    +2
3    Blue Duchess         5    60.0    3    0.75     0.0   89    89           89    +0
4    Glitter In The Air   4    55.5    4    1.25     2.0   75    76           76    +1
5    Wings Of Fire        4    58.0    5    2.50     2.0   80    79           79    -1
6    Mifid Two            4    54.5    6    2.55     2.0   73    72           72    -1
7    En Garde             4    55.0    7    2.80     2.0   74    73           73    -1
8    Respectable Miss     4    60.0    8    2.90     2.0   84    83           83    -1
9    Oh So Squishy        3    54.0    9    6.40     4.0   80    65           70    -10
10   Chile Jam            4    60.0    10   7.65     2.0   84    81           81    -3
11   Sultanah             5    58.0    11   8.15     0.0   80    81           81    +1
12   Silver Tiara         5    58.0    12   10.15    0.0   80    81           81    +1
99   Bold Decision        4    54.0    99   0.00     2.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Meercat 75 79 75 +4 0.0 -
2 Irish Willow 82 80 84 -4 2.0 -
3 Blue Duchess Line 89 86 89 -3 0.0
4 Glitter In The Air 75 71 76 -5 2.0 -
5 Wings Of Fire 80 93 79 +14 2.0 -
6 Mifid Two 73 69 72 -3 2.0 -
7 En Garde 74 70 73 -3 2.0 -
8 Respectable Miss 84 50 83 -33 2.0 -
9 Oh So Squishy 80 68 70 -2 4.0 -
10 Chile Jam 84 81 81 ✓ Match 2.0 -
11 Sultanah 80 59 81 -22 0.0 -
12 Silver Tiara 80 73 81 -8 0.0 -
99 Bold Decision - 72 69 +3 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