Official NHA Assessment

Race 10: NEXT VAAL RACEMEETING THURSDAY 6 APRIL CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
After Hours
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
2 / 15
Within 2 points
Significant Diffs
11 / 15
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    Mescal               2    52.0    1    0.00     0.0   64    56           56    -8
2    Quandary             5    60.0    2    0.05     0.0   80    72           72    -8
3    Angel Of War         3    60.0    3    0.40     2.5   73    72           72    -1
4    After Hours          7    52.0    4    1.75     0.0   59    59           59    +0
5    The Chosen One       2    56.0    5    3.25     0.0   70    66           66    -4
6    Blue Waters          2    58.0    6    3.35     0.0   81    69           71    -10
7    Meet The Captain     4    50.0    7    4.35     1.5   55    49           49    -6
8    Sage King            3    58.0    8    6.35     2.5   70    63           63    -7
9    Princess Ilaria      5    56.0    9    8.00     0.0   74    64           64    -10
10   Rain Or Shine        4    58.0    10   8.50     1.5   70    65           65    -5
11   Big City Girl        4    48.5    11   11.00    1.5   59    46           49    -10
12   Ballon D'or          5    58.0    12   16.00    0.0   71    68           68    -3
13   Three Hearts         3    50.5    13   21.00    2.5   55    48           48    -7
99   Indus Knight         3    60.0    99   0.00     2.5   -     67           67    +0
99   Run For Cover        5    60.0    99   0.00     0.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mescal 64 64 56 +8 0.0 -
2 Quandary 80 88 72 +16 0.0 -
3 Angel Of War 73 83 72 +11 2.5 -
4 After Hours Line 59 79 59 +20 0.0
5 The Chosen One 70 52 66 -14 0.0 -
6 Blue Waters 81 61 71 -10 0.0 -
7 Meet The Captain 55 52 49 +3 1.5 -
8 Sage King 70 72 63 +9 2.5 -
9 Princess Ilaria 74 79 64 +15 0.0 -
10 Rain Or Shine 70 82 65 +17 1.5 -
11 Big City Girl 59 59 49 +10 1.5 -
12 Ballon D'or 71 61 68 -7 0.0 -
13 Three Hearts 55 50 48 +2 2.5 -
99 Indus Knight - 70 67 +3 2.5 -
99 Run For Cover - 70 72 -2 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