Official NHA Assessment

Race 7: Join the Social Squad Syndicate today www.socialsquad.co.za MIDDLE STAKES (F & M) (For Fillies and Mares)

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Line Horse
Convocation
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
8 / 11
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    Captain's Christy    4    60.0    1    0.00     9.0   92    76           76    -16
2    Convocation          5    60.0    2    0.30     0.0   94    94           94    +0
3    Wings Of Josephine   3    51.5    3    2.50     7.5   80    62           70    -10
4    Ayuwi Yuwi           2    52.5    4    2.70     5.0   74    69           69    -5
5    Perfume Power        2    50.0    5    4.10     5.0   86    64           76    -10
6    Ruby Rising          3    54.0    6    6.70     7.5   78    67           68    -10
99   Million Voices       2    57.0    99   0.00     5.0   -     78           78    +0
99   Tara Star            4    57.5    99   0.00     9.0   -     71           71    +0
99   Winter Rainfall      4    53.0    99   0.00     9.0   -     62           62    +0
99   Kythera              2    54.5    99   0.00     5.0   -     73           73    +0
99   Vision To Achieve    4    55.5    99   0.00     9.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captain's Christy 92 95 76 +19 9.0 -
2 Convocation Line 94 94 94 ✓ Match 0.0
3 Wings Of Josephine 80 78 70 +8 7.5 -
4 Ayuwi Yuwi 74 71 69 +2 5.0 -
5 Perfume Power 86 90 76 +14 5.0 -
6 Ruby Rising 78 77 68 +9 7.5 -
99 Million Voices - 77 78 -1 5.0 -
99 Tara Star - 96 71 +25 9.0 -
99 Winter Rainfall - 87 62 +25 9.0 -
99 Kythera - 87 73 +14 5.0 -
99 Vision To Achieve - 87 67 +20 9.0 -
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