Official NHA Assessment

Race 6: TAB TELEBET 0861 000 822 MR 79 APPRENTICE HANDICAP (Open)

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Line Horse
Java House
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
9 / 12
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    Letsdoit             3    56.0    1    0.00     2.0   76    76           76    +0
2    Java House           4    48.0    2    2.00     2.5   59    59           59    +0
3    Ridge To Reef        3    53.5    3    2.25     2.0   76    71           71    -5
4    Double Magic         3    57.0    4    3.00     2.0   80    78           78    -2
5    Kotinos              3    58.0    5    3.50     2.0   80    80           80    +0
6    Back To Basics       3    48.0    6    4.50     2.0   62    60           60    -2
7    Written In Stone     9    54.5    7    4.60     0.0   68    77           77    +9
8    Dark Tide            5    54.0    8    5.50     0.0   75    76           76    +1
9    Edgartown            3    56.5    9    9.00     2.0   74    77           77    +3
10   Trust The Fire       4    51.5    10   14.00    2.5   65    66           66    +1
11   Voyeur               4    56.0    11   21.50    2.5   71    75           75    +4
99   Successful Secret    4    56.0    99   0.00     2.5   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Letsdoit 76 72 76 -4 2.0 -
2 Java House Line 59 52 59 -7 2.5
3 Ridge To Reef 76 70 71 -1 2.0 -
4 Double Magic 80 72 78 -6 2.0 -
5 Kotinos 80 59 80 -21 2.0 -
6 Back To Basics 62 72 60 +12 2.0 -
7 Written In Stone 68 67 77 -10 0.0 -
8 Dark Tide 75 53 76 -23 0.0 -
9 Edgartown 74 57 77 -20 2.0 -
10 Trust The Fire 65 65 66 -1 2.5 -
11 Voyeur 71 68 75 -7 2.5 -
99 Successful Secret - 65 75 -10 2.5 -
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