Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING THURSDAY 12 DECEMBER MR 80 HANDICAP (Open)

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Line Horse
John Wick
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
3 / 10
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    Johnny Appleseed     2    58.5    1    0.00     4.0   85    77           85    +0
2    Duke Of Rock         3    57.5    2    4.75     6.0   75    71           71    -4
3    John Wick            2    62.0    3    5.75     4.0   84    84           84    +0
4    Smith And Wesson     2    58.0    4    6.25     4.0   79    76           76    -3
5    Var Park             5    58.5    5    7.65     0.0   77    85           85    +8
6    Blaze A Way          2    60.0    6    7.85     4.0   88    80           80    -8
7    Tchaikovsky          6    60.5    7    8.15     0.0   81    89           89    +8
8    Kinshin Sha          4    61.5    8    8.45     7.0   83    77           77    -6
9    Veldskoen (AUS)      4    59.5    9    9.15     7.0   79    73           73    -6
10   Bridge Of Spies      6    48.0    10   19.40    0.0   48    64           64    +16
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Johnny Appleseed 85 90 85 +5 4.0 -
2 Duke Of Rock 75 76 71 +5 6.0 -
3 John Wick Line 84 82 84 -2 4.0
4 Smith And Wesson 79 73 76 -3 4.0 -
5 Var Park 77 87 85 +2 0.0 -
6 Blaze A Way 88 80 80 ✓ Match 4.0 -
7 Tchaikovsky 81 81 89 -8 0.0 -
8 Kinshin Sha 83 62 77 -15 7.0 -
9 Veldskoen (AUS) 79 71 73 -2 7.0 -
10 Bridge Of Spies 48 48 64 -16 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