Official NHA Assessment

Race 8: #FILLIESINRACING MR 68 HANDICAP (Open)

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Line Horse
Mr Frostie
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 9
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    Arctic Ice           4    59.0    1    0.00     12.0  66    66           66    +0
2    Mr Frostie           4    54.5    2    1.25     12.0  57    57           57    +0
3    Heathcliff           2    57.5    3    1.45     7.0   77    73           73    -4
4    Fly To Rio           4    55.5    4    4.70     12.0  59    59           59    +0
5    Auld Mug             3    61.0    5    5.45     10.5  70    73           73    +3
6    Bluff On Bluff       3    61.5    6    5.75     10.5  71    74           74    +3
7    Rosie Roan           4    57.0    7    7.00     12.0  62    62           62    +0
8    Veronique            6    54.5    8    9.50     0.0   57    81           81    +24
99   Birdie And Bogie     3    61.0    99   0.00     10.5  -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arctic Ice 66 70 66 +4 12.0 -
2 Mr Frostie Line 57 51 57 -6 12.0
3 Heathcliff 77 100 73 +27 7.0 -
4 Fly To Rio 59 54 59 -5 12.0 -
5 Auld Mug 70 59 73 -14 10.5 -
6 Bluff On Bluff 71 80 74 +6 10.5 -
7 Rosie Roan 62 55 62 -7 12.0 -
8 Veronique 57 56 81 -25 0.0 -
99 Birdie And Bogie - 68 73 -5 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