Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING MONDAY 28 AUGUST MR 66 HANDICAP (Open)

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Line Horse
Clap Of Thunder
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 11
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    Timbavati River      3    55.0    1    0.00     8.5   56    54           56    +0
2    On The Road Again    3    60.0    2    1.25     8.5   66    68           68    +2
3    Clap Of Thunder      3    59.0    3    2.75     8.5   64    64           64    +0
4    Empire Blue          4    57.5    4    4.75     6.0   78    64           68    -10
5    Global Force         2    59.0    5    6.25     0.0   81    79           79    -2
6    Kuznetsov            2    59.5    6    7.50     0.0   66    80           80    +14
7    Manchester Fighter   2    57.0    7    7.60     0.0   77    75           75    -2
8    Callmemrgreenlight   3    54.0    8    8.35     8.5   54    52           52    -2
9    Absolu Noir          8    53.5    9    10.35    0.0   53    68           68    +15
10   Gimme A Diamond      2    61.0    10   21.35    0.0   69    83           83    +14
11   Giocatore            2    60.0    11   33.10    0.0   67    81           81    +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Timbavati River 56 79 56 +23 8.5 -
2 On The Road Again 66 79 68 +11 8.5 -
3 Clap Of Thunder Line 64 66 64 +2 8.5
4 Empire Blue 78 71 68 +3 6.0 -
5 Global Force 81 80 79 +1 0.0 -
6 Kuznetsov 66 61 80 -19 0.0 -
7 Manchester Fighter 77 66 75 -9 0.0 -
8 Callmemrgreenlight 54 45 52 -7 8.5 -
9 Absolu Noir 53 50 68 -18 0.0 -
10 Gimme A Diamond 69 54 83 -29 0.0 -
11 Giocatore 67 67 81 -14 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