Official NHA Assessment

Race 6: TABGOLD SCORE 6 AND SCORE 10 MR 68 HANDICAP (Open)

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Line Horse
Quick Star
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
5 / 9
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    Ultra Quick          6    60.5    1    0.00     0.0   72    75           72    +0
2    Preemptive Strike    4    62.0    2    2.20     1.0   72    79           79    +7
3    Quick Star           6    53.5    3    2.60     0.0   63    63           63    +0
3    Brave Voyager        3    57.0    3    2.60     2.0   62    66           66    +4
5    High Velocity        4    52.0    5    4.30     1.0   51    56           56    +5
6    Son Of Silk          4    60.0    6    4.55     1.0   68    72           72    +4
7    Ultimate Jewel       5    61.5    7    4.60     0.0   71    77           77    +6
8    Conchita             4    55.0    8    11.00    1.0   58    62           62    +4
99   Brass Bell           8    53.0    99   0.00     0.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ultra Quick 72 71 72 -1 0.0 -
2 Preemptive Strike 72 70 79 -9 1.0 -
3 Quick Star Line 63 60 63 -3 0.0
3 Brave Voyager 62 51 66 -15 2.0 -
5 High Velocity 51 50 56 -6 1.0 -
6 Son Of Silk 68 65 72 -7 1.0 -
7 Ultimate Jewel 71 80 77 +3 0.0 -
8 Conchita 58 56 62 -6 1.0 -
99 Brass Bell - 55 60 -5 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