Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MR 88 HANDICAP (Open)

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Line Horse
Tabebuia
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 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    Billy Bowlegs        5    58.0    1    0.00     0.0   96    91           96    +0
2    Eye Of The Prophet   2    55.0    2    0.15     0.0   90    85           85    -5
3    Tabebuia             3    56.0    3    1.25     6.0   79    79           79    +0
4    Elusive Swann        4    58.5    4    7.00     3.0   85    86           86    +1
5    The Brief            3    55.5    5    8.50     6.0   80    74           74    -6
6    Kentallen Bay        2    56.0    6    10.50    0.0   92    87           87    -5
7    Clarkson             4    58.0    7    12.25    3.0   84    85           85    +1
8    Stormy Winter        8    56.5    8    13.50    0.0   86    88           88    +2
9    Rule Book            6    56.0    9    14.25    0.0   81    87           87    +6
10   Kaptein              4    60.0    10   20.00    3.0   88    89           89    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Billy Bowlegs 96 104 96 +8 0.0 -
2 Eye Of The Prophet 90 108 85 +23 0.0 -
3 Tabebuia Line 79 94 79 +15 6.0
4 Elusive Swann 85 72 86 -14 3.0 -
5 The Brief 80 90 74 +16 6.0 -
6 Kentallen Bay 92 90 87 +3 0.0 -
7 Clarkson 84 75 85 -10 3.0 -
8 Stormy Winter 86 69 88 -19 0.0 -
9 Rule Book 81 92 87 +5 0.0 -
10 Kaptein 88 80 89 -9 3.0 -
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