Official NHA Assessment

Race 3: OPEN A TABGOLD ACCOUNT - 031 314 1874 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Approachable Lass
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
10 / 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    Approachable Lass    3    60.0    1    0.00     1.5   70    70           70    +0
2    An Air Of Pride      2    57.0    2    3.10     0.5   -     66           66    +66
3    Captain Marvel       3    60.0    3    4.20     1.5   58    70           70    +12
4    Dame Mazona          2    57.0    4    5.90     0.5   -     66           66    +66
5    Sumiko               2    57.0    5    6.60     0.5   -     66           66    +66
6    Kyniska              3    60.0    6    7.10     1.5   56    70           70    +14
7    Freedom Square       3    60.0    7    7.50     1.5   -     70           70    +70
8    Feather Dancer       2    57.0    8    8.25     0.5   -     66           66    +66
9    Secret Summer        2    57.0    9    9.45     0.5   -     66           66    +66
10   Mystique Rouge       3    60.0    10   11.15    1.5   -     70           70    +70
11   Style Icon           4    57.0    11   11.75    2.0   -     63           63    +63
12   Umfolozi             2    55.5    12   13.45    0.5   -     63           63    +63
13   Hello Harper         2    57.0    13   99.99    0.5   -     66           66    +66
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Approachable Lass Line 70 67 70 -3 1.5
2 An Air Of Pride - 68 66 +2 0.5 -
3 Captain Marvel 58 49 70 -21 1.5 -
4 Dame Mazona - 68 66 +2 0.5 -
5 Sumiko - 53 66 -13 0.5 -
6 Kyniska 56 61 70 -9 1.5 -
7 Freedom Square - 63 70 -7 1.5 -
8 Feather Dancer - 50 66 -16 0.5 -
9 Secret Summer - 52 66 -14 0.5 -
10 Mystique Rouge - 62 70 -8 1.5 -
11 Style Icon - 54 63 -9 2.0 -
12 Umfolozi - 54 63 -9 0.5 -
13 Hello Harper - - 66 -66 0.5 -
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