Official NHA Assessment

Race 6: OPEN A TABGOLD ACCOUNT - 031 314 1874 MR 74 HANDICAP (Open)

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Line Horse
Bom Bom
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    All The Time         3    57.5    1    0.00     4.5   72    76           72    +0
2    El Draque            5    57.5    2    0.90     0.0   74    85           85    +11
3    Bom Bom              4    59.0    3    1.30     5.0   78    78           78    +0
4    Preemptive Strike    4    60.0    4    1.80     5.0   74    80           80    +6
5    Quick Star           6    54.0    5    3.70     0.0   70    78           78    +8
6    Happy Wanderer       5    55.5    6    3.80     0.0   65    81           81    +16
7    Benni In The Area    3    60.5    7    6.20     4.5   75    82           82    +7
8    Gimme A Rainbow      4    61.0    8    6.80     5.0   76    82           82    +6
99   Intrepid             3    59.0    99   0.00     4.5   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 All The Time 72 74 72 +2 4.5 -
2 El Draque 74 57 85 -28 0.0 -
3 Bom Bom Line 78 64 78 -14 5.0
4 Preemptive Strike 74 70 80 -10 5.0 -
5 Quick Star 70 60 78 -18 0.0 -
6 Happy Wanderer 65 55 81 -26 0.0 -
7 Benni In The Area 75 78 82 -4 4.5 -
8 Gimme A Rainbow 76 74 82 -8 5.0 -
99 Intrepid - 73 79 -6 4.5 -
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