Official NHA Assessment

Race 5: EQUUS CHAMPION BREEDER DRAKENSTEIN STUD FM 86 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Raratonga Rose
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 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    Opera Glass          4    60.0    1    0.00     7.0   86    71           86    +0
2    Apache Fighter       4    57.5    2    0.05     7.0   81    66           71    -10
3    Raratonga Rose       2    60.0    3    1.50     0.0   88    88           88    +0
4    Last Cheer           5    53.5    4    2.50     0.0   73    74           74    +1
5    Avoontoast           5    59.0    5    2.75     0.0   86    85           85    -1
6    Bold Fortune         4    59.5    6    3.25     7.0   85    72           75    -10
7    Paton's Tears        4    58.5    7    3.50     7.0   83    69           73    -10
8    Ballroom Bliss       4    58.0    8    3.75     7.0   82    68           72    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Opera Glass 86 81 86 -5 7.0 -
2 Apache Fighter 81 81 71 +10 7.0 -
3 Raratonga Rose Line 88 80 88 -8 0.0
4 Last Cheer 73 72 74 -2 0.0 -
5 Avoontoast 86 86 85 +1 0.0 -
6 Bold Fortune 85 83 75 +8 7.0 -
7 Paton's Tears 83 78 73 +5 7.0 -
8 Ballroom Bliss 82 84 72 +12 7.0 -
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