Official NHA Assessment

Race 5: OPEN A TABGOLD ACCOUNT - 031 314 1874 MIDDLE STAKES (For horses with nett rating of 80 and below)

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Line Horse
Wyatt's Choice
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 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    Madison Valley       4    60.0    1    0.00     1.0   82    75           75    -7
2    Wyatt's Choice       5    58.0    2    3.50     0.0   74    74           74    +0
3    Riccardo             7    56.5    3    3.55     0.0   74    71           71    -3
4    Send Me              3    59.0    4    3.70     2.0   79    72           72    -7
5    Master Of Destiny    8    59.0    5    4.75     0.0   77    75           75    -2
6    Blazing Light        3    56.0    6    6.25     2.0   67    65           65    -2
7    Khanyisa Indlela     3    57.0    7    8.55     2.0   70    67           67    -3
8    Connoisseur          4    58.0    8    9.25     1.0   76    71           71    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Madison Valley 82 116 75 +41 1.0 -
2 Wyatt's Choice Line 74 71 74 -3 0.0
3 Riccardo 74 68 71 -3 0.0 -
4 Send Me 79 64 72 -8 2.0 -
5 Master Of Destiny 77 73 75 -2 0.0 -
6 Blazing Light 67 62 65 -3 2.0 -
7 Khanyisa Indlela 70 74 67 +7 2.0 -
8 Connoisseur 76 56 71 -15 1.0 -
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