Official NHA Assessment

Race 4: BET WITH TABGOLD - THE INTELLIGENT BET! MAIDEN PLATE (For all Maidens)

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Line Horse
Tibbott Bourke
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
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    Imaginable           3    58.5    1    0.00     4.0   66    66           66    +0
2    Send Me              3    60.0    2    1.70     4.0   -     72           72    +72
3    Tibbott Bourke       4    60.0    3    2.70     2.0   75    75           75    +0
4    Rock Of Bismantova   3    60.0    4    4.00     4.0   76    70           70    -6
5    Basie Raakvat        4    60.0    5    4.25     2.0   68    74           74    +6
6    Isorender            2    60.0    6    4.55     0.0   72    77           77    +5
7    Rafino               3    60.0    7    16.75    4.0   50    69           69    +19
8    Grande Signor        3    60.0    8    18.65    4.0   -     69           69    +69
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Imaginable 66 92 66 +26 4.0 -
2 Send Me - 64 72 -8 4.0 -
3 Tibbott Bourke Line 75 51 75 -24 2.0
4 Rock Of Bismantova 76 80 70 +10 4.0 -
5 Basie Raakvat 68 63 74 -11 2.0 -
6 Isorender 72 63 77 -14 0.0 -
7 Rafino 50 45 69 -24 4.0 -
8 Grande Signor - 34 69 -35 4.0 -
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