Official NHA Assessment

Race 9: NEXT VAAL RACEMEETING THURSDAY 20 OCTOBER MR 68 HANDICAP (Open)

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Line Horse
Great Times
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Back To Basics       3    54.0    1    0.00     8.5   56    56           56    +0
2    Arbitrator           2    57.5    2    3.50     5.5   74    69           69    -5
3    Great Times          3    60.0    3    6.00     8.5   68    68           68    +0
4    Irontail             4    58.5    4    7.00     10.0  65    62           62    -3
5    Trust The Fire       4    59.0    5    8.25     10.0  66    63           63    -3
6    Lizado               3    56.5    6    10.00    8.5   61    61           61    +0
7    Irrevocable Dream    5    60.0    7    10.75    0.0   68    85           85    +17
8    Miss Soho            2    58.0    8    11.00    5.5   75    70           70    -5
9    Red Carpet Girl      3    58.5    9    11.40    8.5   65    65           65    +0
10   Bridge Of Spies      6    52.0    10   11.50    0.0   48    69           69    +21
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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 56 72 56 +16 8.5 -
2 Arbitrator 74 82 69 +13 5.5 -
3 Great Times Line 68 54 68 -14 8.5
4 Irontail 65 64 62 +2 10.0 -
5 Trust The Fire 66 65 63 +2 10.0 -
6 Lizado 61 42 61 -19 8.5 -
7 Irrevocable Dream 68 62 85 -23 0.0 -
8 Miss Soho 75 73 70 +3 5.5 -
9 Red Carpet Girl 65 55 65 -10 8.5 -
10 Bridge Of Spies 48 48 69 -21 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