Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MR 96 HANDICAP (Open)

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Line Horse
Son Of Zeus
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 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    Gimme's Laddie       2    60.0    1    0.00     7.0   96    103          96    +0
2    Forest Spy           2    53.5    2    0.75     7.0   83    90           90    +7
3    Son Of Zeus          3    53.0    3    2.00     10.5  82    82           82    +0
4    The Mauritian        3    59.0    4    3.25     10.5  94    94           94    +0
5    Ubisika              2    55.0    5    3.30     7.0   86    93           93    +7
6    Symbol Of Love       2    49.5    6    3.55     7.0   78    82           82    +4
7    Whatever Next        6    53.5    7    4.80     0.0   83    104          104   +21
8    Piroshka             5    59.0    8    5.05     0.0   93    115          115   +22
9    Transact             3    52.5    9    6.30     10.5  80    81           81    +1
10   Flowerbomb           2    58.5    10   6.40     7.0   96    100          100   +4
99   Esther               3    58.5    99   0.00     10.5  -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gimme's Laddie 96 101 96 +5 7.0 -
2 Forest Spy 83 85 90 -5 7.0 -
3 Son Of Zeus Line 82 81 82 -1 10.5
4 The Mauritian 94 100 94 +6 10.5 -
5 Ubisika 86 80 93 -13 7.0 -
6 Symbol Of Love 78 94 82 +12 7.0 -
7 Whatever Next 83 73 104 -31 0.0 -
8 Piroshka 93 72 115 -43 0.0 -
9 Transact 80 77 81 -4 10.5 -
10 Flowerbomb 96 87 100 -13 7.0 -
99 Esther - 93 93 ✓ Match 10.5 -
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