Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Gimme Royalty
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 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    Vesuvio              5    57.0    1    0.00     0.0   -     58           6     +6
2    Full Go              6    60.0    2    0.30     0.0   48    64           64    +16
3    Northern Tune        4    60.0    3    2.00     0.0   40    64           64    +24
4    Giancarlo            2    57.0    4    2.60     1.5   -     55           55    +55
5    Gimme Royalty        3    60.0    5    3.60     2.5   59    59           59    +0
6    Simple Man           3    60.0    6    5.35     2.5   -     59           59    +59
7    Harcourt             2    57.0    7    7.20     1.5   -     55           55    +55
8    Great Melody         3    60.0    8    7.50     2.5   62    59           59    -3
9    Plenty Of It         3    60.0    9    15.00    2.5   35    59           59    +24
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vesuvio - 85 6 +79 0.0 -
2 Full Go 48 59 64 -5 0.0 -
3 Northern Tune 40 62 64 -2 0.0 -
4 Giancarlo - 45 55 -10 1.5 -
5 Gimme Royalty Line 59 49 59 -10 2.5
6 Simple Man - - 59 -59 2.5 -
7 Harcourt - 52 55 -3 1.5 -
8 Great Melody 62 79 59 +20 2.5 -
9 Plenty Of It 35 22 59 -37 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