Official NHA Assessment

Race 10: NEXT VAAL RACEMEETING THURSDAY 11 MAY MR 68 HANDICAP (Open)

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Line Horse
Conker The World
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
7 / 12
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Back To Basics       3    56.0    1    0.00     2.0   60    57           60    +0
2    Spring Will Come     3    57.0    2    1.50     2.0   65    62           62    -3
3    Conker The World     4    56.0    3    5.00     0.5   60    60           60    +0
4    Big City Girl        4    53.0    4    6.00     0.5   54    54           54    +0
5    Timbavati River      3    55.5    5    7.50     2.0   59    56           56    -3
6    Speechmaker          5    52.5    6    8.00     0.0   58    54           54    -4
7    Super Secret         2    53.0    7    8.75     0.0   58    55           55    -3
8    Rockingthetimeaway   3    57.5    8    9.00     2.0   63    60           60    -3
9    Gimme Royalty        3    55.5    9    12.00    2.0   59    56           56    -3
10   Bushveld             3    59.5    10   14.00    2.0   74    64           64    -10
11   Masters Queen        3    57.5    11   25.00    2.0   68    60           60    -8
99   Written In Stone     9    56.0    99   0.00     0.0   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Back To Basics 60 72 60 +12 2.0 -
2 Spring Will Come 65 72 62 +10 2.0 -
3 Conker The World Line 60 57 60 -3 0.5
4 Big City Girl 54 59 54 +5 0.5 -
5 Timbavati River 59 79 56 +23 2.0 -
6 Speechmaker 58 61 54 +7 0.0 -
7 Super Secret 58 50 55 -5 0.0 -
8 Rockingthetimeaway 63 62 60 +2 2.0 -
9 Gimme Royalty 59 49 56 -7 2.0 -
10 Bushveld 74 56 64 -8 2.0 -
11 Masters Queen 68 56 60 -4 2.0 -
99 Written In Stone - 67 61 +6 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