Official NHA Assessment

Race 5: DRAKENSTEIN STUD PROGRESS PLATE (For Maidens, 1, 2 & 3 time winners)

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Line Horse
My Bestie
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 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    Seventh Gear         5    60.0    1    0.00     0.0   96    100          70    -26
2    Izapha               4    58.0    2    0.10     2.5   84    91           91    +7
3    My Bestie            7    56.5    3    0.60     0.0   98    98           98    +0
4    Bayberry             5    55.5    4    2.35     0.0   105   93           95    -10
5    Hyde Park            4    61.0    5    3.10     2.5   100   99           99    -1
6    Sachdev              5    61.0    6    3.60     0.0   108   103          103   -5
7    Winchester Mansion   3    54.5    7    3.65     5.0   85    80           80    -5
8    Waiting For Summer   3    54.0    8    3.70     5.0   99    79           89    -10
9    Darjeeling           3    54.0    9    3.95     5.0   87    79           79    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Seventh Gear 96 99 70 +29 0.0 -
2 Izapha 84 74 91 -17 2.5 -
3 My Bestie Line 98 61 98 -37 0.0
4 Bayberry 105 104 95 +9 0.0 -
5 Hyde Park 100 95 99 -4 2.5 -
6 Sachdev 108 101 103 -2 0.0 -
7 Winchester Mansion 85 129 80 +49 5.0 -
8 Waiting For Summer 99 79 89 -10 5.0 -
9 Darjeeling 87 78 79 -1 5.0 -
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