Official NHA Assessment

Race 5: COMPUTAFORM ONLINE FM 78 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Nippy Winter
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    What A State         3    56.0    1    0.00     3.5   75    75           75    +0
2    Super Siri           3    55.0    2    1.00     3.5   72    73           73    +1
3    Nippy Winter         3    58.0    3    1.50     3.5   79    79           79    +0
4    Different Face (GB)  4    61.5    4    1.55     4.0   81    85           85    +4
5    Seeking Peace        3    58.5    5    3.55     3.5   80    80           80    +0
6    African Winter       4    53.5    6    3.95     4.0   65    69           69    +4
7    Fearless Trip        3    58.0    7    4.25     3.5   79    79           79    +0
8    Apollo Moon          3    55.0    8    5.50     3.5   73    73           73    +0
9    Arctic Ice           4    54.5    9    5.70     4.0   67    71           71    +4
10   Magnetic Dime        4    55.5    10   8.70     4.0   69    73           73    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 What A State 75 82 75 +7 3.5 -
2 Super Siri 72 63 73 -10 3.5 -
3 Nippy Winter Line 79 66 79 -13 3.5
4 Different Face (GB) 81 76 85 -9 4.0 -
5 Seeking Peace 80 55 80 -25 3.5 -
6 African Winter 65 59 69 -10 4.0 -
7 Fearless Trip 79 63 79 -16 3.5 -
8 Apollo Moon 73 63 73 -10 3.5 -
9 Arctic Ice 67 70 71 -1 4.0 -
10 Magnetic Dime 69 78 73 +5 4.0 -
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