Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING THURSDAY 28 NOVEMBER MR 80 HANDICAP (Open)

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Line Horse
After Hours
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
5 / 14
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    Bacchus              3    59.0    1    0.00     7.0   92    60           92    +0
2    Dark Silver          4    58.5    2    1.50     4.0   77    68           68    -9
3    After Hours          7    52.0    3    2.00     0.0   63    63           63    +0
4    Vava Vegas           5    49.0    4    3.25     0.0   66    56           56    -10
5    Stormy Winter        8    57.0    5    4.75     0.0   74    70           70    -4
6    Thambi               5    54.0    6    5.25     0.0   68    64           64    -4
7    Hammies Hero         2    56.0    7    6.50     0.0   72    68           68    -4
8    Red Legend           2    56.5    8    7.25     0.0   87    69           77    -10
9    Eiffel Tower         4    58.5    9    7.75     4.0   82    65           72    -10
10   New Mexico           2    57.5    10   8.75     0.0   75    71           71    -4
11   Fifth Of July        5    55.5    11   11.00    0.0   71    67           67    -4
12   Together Again       5    52.0    12   24.00    0.0   54    60           60    +6
13   Hat Trick Or Treat   2    56.0    13   27.00    0.0   86    68           76    -10
14   Volte Face           3    55.5    14   99.99    7.0   71    53           61    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bacchus 92 101 92 +9 7.0 -
2 Dark Silver 77 84 68 +16 4.0 -
3 After Hours Line 63 79 63 +16 0.0
4 Vava Vegas 66 58 56 +2 0.0 -
5 Stormy Winter 74 69 70 -1 0.0 -
6 Thambi 68 55 64 -9 0.0 -
7 Hammies Hero 72 69 68 +1 0.0 -
8 Red Legend 87 81 77 +4 0.0 -
9 Eiffel Tower 82 69 72 -3 4.0 -
10 New Mexico 75 83 71 +12 0.0 -
11 Fifth Of July 71 63 67 -4 0.0 -
12 Together Again 54 55 60 -5 0.0 -
13 Hat Trick Or Treat 86 76 76 ✓ Match 0.0 -
14 Volte Face 71 66 61 +5 7.0 -
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