Official NHA Assessment

Race 6: ONLINE FORM GUIDE www.gallop.co.za MIDDLE STAKES (F & M) (For Fillies and Mares)

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Line Horse
Sovereign Grant
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 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    Convocation          5    58.5    1    0.00     0.0   92    97           97    +5
2    Tomyris              4    60.0    2    0.40     4.5   95    96           96    +1
3    Sovereign Grant      4    60.0    3    0.90     4.5   95    95           95    +0
4    Jazz Cafe            3    53.0    4    1.95     7.0   84    75           75    -9
5    Limitless Sky        2    57.0    5    2.75     0.0   103   96           96    -7
6    Perilla              5    58.5    6    3.15     0.0   92    99           99    +7
7    Jeanne Darc          3    57.0    7    3.65     7.0   91    81           81    -10
8    Cape Lights          5    55.5    8    4.85     0.0   86    91           91    +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Convocation 92 94 97 -3 0.0 -
2 Tomyris 95 93 96 -3 4.5 -
3 Sovereign Grant Line 95 92 95 -3 4.5
4 Jazz Cafe 84 82 75 +7 7.0 -
5 Limitless Sky 103 98 96 +2 0.0 -
6 Perilla 92 89 99 -10 0.0 -
7 Jeanne Darc 91 83 81 +2 7.0 -
8 Cape Lights 86 74 91 -17 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