Official NHA Assessment

Race 5: JOIN THE IPI TOMBE 100 CLUB DIVIDED MR 80 HANDICAP ()

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Line Horse
Ultimate Jewel
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
2 / 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    Magic Exists         3    59.5    1    0.00     7.0   80    62           80    +0
2    The Octagon          2    58.0    2    1.25     0.0   76    77           77    +1
3    Ultimate Jewel       5    58.5    3    1.75     0.0   77    77           77    +0
4    Captive Moon         6    57.0    4    2.50     0.0   74    73           73    -1
5    Master Tik Tok       5    60.0    5    4.50     0.0   80    77           77    -3
6    Jack In The Green    2    60.0    6    12.50    0.0   80    77           77    -3
99   King's Crown         3    56.5    99   0.00     7.0   -     56           56    +0
99   Raining Again        6    56.5    99   0.00     0.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Magic Exists 80 91 80 +11 7.0 -
2 The Octagon 76 76 77 -1 0.0 -
3 Ultimate Jewel Line 77 80 77 +3 0.0
4 Captive Moon 74 75 73 +2 0.0 -
5 Master Tik Tok 80 80 77 +3 0.0 -
6 Jack In The Green 80 80 77 +3 0.0 -
99 King's Crown - 79 56 +23 7.0 -
99 Raining Again - 73 70 +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