Official NHA Assessment

Race 4: TAB 4RACING APP FM 84 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Carbonado
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 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    Daughter Of Zeus     4    57.5    1    0.00     1.0   79    78           79    +0
2    Definitely Maybe     3    55.5    2    0.25     2.5   75    71           71    -4
3    Chroniclesofnania    5    54.0    3    0.50     0.0   77    78           78    +1
4    Carbonado            2    58.5    4    1.00     0.0   86    86           86    +0
5    Heartsease           3    57.5    5    3.25     2.5   79    77           77    -2
6    Eternity Ring        3    60.0    6    3.75     2.5   84    81           81    -3
7    Dame Of Flames       3    56.0    7    4.25     2.5   74    73           73    -1
8    Phoenix              4    60.0    8    9.75     1.0   84    83           83    -1
9    Che Vincera          2    52.5    9    11.00    0.0   73    70           70    -3
10   Willow Lane          4    55.5    10   12.00    1.0   75    74           74    -1
11   Chloris              4    54.5    11   22.25    1.0   73    72           72    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Daughter Of Zeus 79 82 79 +3 1.0 -
2 Definitely Maybe 75 97 71 +26 2.5 -
3 Chroniclesofnania 77 60 78 -18 0.0 -
4 Carbonado Line 86 92 86 +6 0.0
5 Heartsease 79 73 77 -4 2.5 -
6 Eternity Ring 84 80 81 -1 2.5 -
7 Dame Of Flames 74 95 73 +22 2.5 -
8 Phoenix 84 78 83 -5 1.0 -
9 Che Vincera 73 55 70 -15 0.0 -
10 Willow Lane 75 66 74 -8 1.0 -
11 Chloris 73 73 72 +1 1.0 -
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