Official NHA Assessment

Race 6: umTHOMBOTHI STAKES (Open - Non-Black Type)

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Line Horse
Sugar Blast
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 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    Bella Siccome        3    51.0    1    0.00     5.0   90    80           80    -10
2    Cape Eagle           7    60.0    2    0.05     0.0   103   108          108   +5
3    Queue Wing           7    56.0    3    1.45     0.0   95    105          105   +10
4    Mexican Pete         3    54.0    4    5.15     5.0   100   86           90    -10
5    Sugar Blast          2    53.5    5    6.35     0.0   95    95           95    +0
6    News Stream          6    53.5    6    7.25     0.0   87    95           95    +8
7    Addabar              3    57.5    7    7.40     5.0   98    93           93    -5
8    Down To Business     2    58.0    8    8.00     0.0   99    104          104   +5
9    Sea Goddess          3    51.0    9    14.40    5.0   84    80           80    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bella Siccome 90 93 80 +13 5.0 -
2 Cape Eagle 103 106 108 -2 0.0 -
3 Queue Wing 95 81 105 -24 0.0 -
4 Mexican Pete 100 84 90 -6 5.0 -
5 Sugar Blast Line 95 102 95 +7 0.0
6 News Stream 87 83 95 -12 0.0 -
7 Addabar 98 97 93 +4 5.0 -
8 Down To Business 99 100 104 -4 0.0 -
9 Sea Goddess 84 80 80 ✓ Match 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