Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MR 68 HANDICAP (Open)

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Line Horse
Thunder Master
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 11
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    Swiss Walt           4    62.0    1    0.00     2.0   72    68           72    +0
2    Thunder Master       6    61.0    2    1.75     0.0   70    70           70    +0
3    Lucky Spirit         3    58.5    3    2.00     1.5   71    62           62    -9
4    Ravilious            3    58.0    4    5.25     1.5   65    61           61    -4
5    Russian Empire       5    55.5    5    6.00     0.0   59    59           59    +0
6    Munchkin             5    60.5    6    6.75     0.0   69    69           69    +0
7    Casino Ace           5    58.0    7    6.85     0.0   63    64           64    +1
8    Jambo Sana           2    61.0    8    7.10     0.5   70    69           69    -1
9    House Of Sussex      4    55.5    9    7.60     2.0   59    55           55    -4
10   Chief Runner         3    58.0    10   16.10    1.5   73    61           63    -10
99   Notorix              6    60.0    99   0.00     0.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Swiss Walt 72 74 72 +2 2.0 -
2 Thunder Master Line 70 80 70 +10 0.0
3 Lucky Spirit 71 70 62 +8 1.5 -
4 Ravilious 65 81 61 +20 1.5 -
5 Russian Empire 59 53 59 -6 0.0 -
6 Munchkin 69 65 69 -4 0.0 -
7 Casino Ace 63 56 64 -8 0.0 -
8 Jambo Sana 70 74 69 +5 0.5 -
9 House Of Sussex 59 50 55 -5 2.0 -
10 Chief Runner 73 59 63 -4 1.5 -
99 Notorix - 68 68 ✓ Match 0.0 -
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