Official NHA Assessment

Race 4: LUCKY FISH CHILLI HEAT CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 82)

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Line Horse
Rikkitikkitavi
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
1 / 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    Viva La Vida         2    54.0    1    0.00     0.0   86    84           84    -2
2    Supreme Fate         3    56.5    2    1.00     8.0   76    77           77    +1
3    Rikkitikkitavi       3    59.0    3    2.25     8.0   81    81           81    +0
4    My Only Weakness     3    62.0    4    2.75     8.0   87    86           86    -1
5    Diamond Bomber       2    52.5    5    3.05     0.0   76    83           83    +7
6    Wander Dune (AUS)    2    57.0    6    6.30     0.0   92    90           90    -2
99   Berry's Boogie (AUS  3    61.0    99   0.00     8.0   -     82           82    +0
99   Oncidium             2    51.5    99   0.00     0.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Viva La Vida 86 92 84 +8 0.0 -
2 Supreme Fate 76 78 77 +1 8.0 -
3 Rikkitikkitavi Line 81 77 81 -4 8.0
4 My Only Weakness 87 84 86 -2 8.0 -
5 Diamond Bomber 76 79 83 -4 0.0 -
6 Wander Dune (AUS) 92 90 90 ✓ Match 0.0 -
99 Berry's Boogie (AUS) - 83 82 +1 8.0 -
99 Oncidium - 76 79 -3 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