Official NHA Assessment

Race 7: THE OIL CENTRE PORT ELIZABETH FM 76 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Lady Writer
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
5 / 9
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    Dame Of Flames       3    59.5    1    0.00     10.0  75    71           75    +0
2    Lady Writer          3    55.5    2    1.25     10.0  69    69           69    +0
3    Crafty Heart         4    52.0    3    1.35     7.0   59    67           67    +8
4    Aerial View          3    61.0    4    1.40     10.0  78    79           79    +1
5    Phoenix              4    61.0    5    1.45     7.0   78    85           85    +7
6    Hey Siri             2    57.5    6    1.55     0.0   73    92           92    +19
7    Gold For Africa      3    53.5    7    2.05     10.0  65    64           64    -1
8    Chroniclesofnania    5    60.0    8    2.10     0.0   78    97           97    +19
9    Hazy Crazy Night     2    62.0    9    3.60     0.0   82    99           99    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dame Of Flames 75 95 75 +20 10.0 -
2 Lady Writer Line 69 69 69 ✓ Match 10.0
3 Crafty Heart 59 63 67 -4 7.0 -
4 Aerial View 78 82 79 +3 10.0 -
5 Phoenix 78 78 85 -7 7.0 -
6 Hey Siri 73 70 92 -22 0.0 -
7 Gold For Africa 65 68 64 +4 10.0 -
8 Chroniclesofnania 78 60 97 -37 0.0 -
9 Hazy Crazy Night 82 79 99 -20 0.0 -
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