Official NHA Assessment

Race 4: COMPUTAFORM ONLINE MAIDEN PLATE (For all Maidens)

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Line Horse
Masterful Guy
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    Axl                  3    60.0    1    0.00     2.5   -     68           6     +6
2    Bowled Over          3    60.0    2    1.25     2.5   -     72           72    +72
3    Tchaikovsky          6    60.0    3    1.45     0.0   74    76           76    +2
4    Masterful Guy        3    60.0    4    1.95     2.5   71    71           71    +0
5    Castle Time          3    60.0    5    2.00     2.5   -     71           71    +71
6    Autumn Moon          3    60.0    6    2.75     2.5   63    70           70    +7
7    Boisterous Buddy     3    60.0    7    4.25     2.5   71    69           69    -2
8    State Of Shock       3    60.0    8    6.00     2.5   59    68           68    +9
9    Coup Royal           3    60.0    9    10.50    2.5   57    68           68    +11
10   Kwacha Dawn          3    60.0    10   16.00    2.5   -     68           68    +68
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Axl - 84 6 +78 2.5 -
2 Bowled Over - 64 72 -8 2.5 -
3 Tchaikovsky 74 81 76 +5 0.0 -
4 Masterful Guy Line 71 58 71 -13 2.5
5 Castle Time - 60 71 -11 2.5 -
6 Autumn Moon 63 57 70 -13 2.5 -
7 Boisterous Buddy 71 62 69 -7 2.5 -
8 State Of Shock 59 58 68 -10 2.5 -
9 Coup Royal 57 53 68 -15 2.5 -
10 Kwacha Dawn - - 68 -68 2.5 -
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