Official NHA Assessment

Race 2: TABGOLD SCORE 10 CONDITIONAL MAIDEN (F & M) (For Mdn F&M with 3 runs or more, Nett Rating of 68 & below)

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Line Horse
Head Girl
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    Head Girl            5    59.0    1    0.00     0.0   64    64           64    +0
2    Zena Rose            3    60.0    2    0.60     6.0   76    54           66    -10
3    Fantasy League       3    57.0    3    3.90     6.0   67    48           57    -10
4    Lightinthedarkness   3    52.5    4    4.15     6.0   58    39           48    -10
5    Dynasty's Last       5    56.0    5    6.65     0.0   56    58           58    +2
6    Sunka Wakan          2    52.0    6    8.55     4.0   64    42           54    -10
7    Sun Kitten           3    54.0    7    10.55    6.0   47    42           42    -5
8    Admirals Queen       2    54.0    8    12.65    4.0   50    46           46    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Head Girl Line 64 62 64 -2 0.0
2 Zena Rose 76 73 66 +7 6.0 -
3 Fantasy League 67 54 57 -3 6.0 -
4 Lightinthedarkness 58 59 48 +11 6.0 -
5 Dynasty's Last 56 61 58 +3 0.0 -
6 Sunka Wakan 64 58 54 +4 4.0 -
7 Sun Kitten 47 44 42 +2 6.0 -
8 Admirals Queen 50 47 46 +1 4.0 -
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