Official NHA Assessment

Race 7: TAB TELEBET 0861 000 822 NOVICE PLATE (Maidens & 1 time Winners)

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Line Horse
Royal Kingdom
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 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    Instaworthy          2    56.0    1    0.00     6.5   94    82           82    -12
2    Silvonian            3    60.0    2    3.25     9.5   76    84           84    +8
3    Royal Kingdom        2    58.0    3    3.30     6.5   86    86           86    +0
4    Hair Trigger         2    57.5    4    4.30     6.5   76    85           85    +9
5    Winter Warfare       2    57.5    5    10.80    6.5   84    85           85    +1
6    Mister Whistle       4    57.0    6    14.05    11.0  53    75           75    +22
99   Lucky Spirit         3    60.0    99   0.00     9.5   -     84           84    +0
99   Augusta Rosso        2    55.5    99   0.00     6.5   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Instaworthy 94 107 82 +25 6.5 -
2 Silvonian 76 86 84 +2 9.5 -
3 Royal Kingdom Line 86 103 86 +17 6.5
4 Hair Trigger 76 76 85 -9 6.5 -
5 Winter Warfare 84 80 85 -5 6.5 -
6 Mister Whistle 53 52 75 -23 11.0 -
99 Lucky Spirit - 70 84 -14 9.5 -
99 Augusta Rosso - 86 81 +5 6.5 -
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