Official NHA Assessment

Race 6: GREYVILLE CONVENTION CENTRE C STAKES (For All Horses with a nett rating of 83 & below)

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Line Horse
Papa C
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 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    Gurkha               3    60.0    1    0.00     2.0   78    63           63    -15
2    Papa C               6    58.5    2    0.60     0.0   71    71           71    +0
3    The Wolf             3    58.5    3    2.40     2.0   76    64           66    -10
4    Bad Medicine         3    61.5    4    3.45     2.0   81    69           71    -10
5    Master Bomber        3    60.0    5    3.70     2.0   77    66           67    -10
6    My Boy Lollipop      2    61.5    6    4.90     0.0   81    70           71    -10
7    Tin Cup              3    56.0    7    4.95     2.0   74    55           64    -10
8    Riccardo             7    61.5    8    5.15     0.0   77    70           70    -7
9    Intuitive Spirit     4    57.0    9    10.05    1.0   70    59           60    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gurkha 78 80 63 +17 2.0 -
2 Papa C Line 71 73 71 +2 0.0
3 The Wolf 76 71 66 +5 2.0 -
4 Bad Medicine 81 100 71 +29 2.0 -
5 Master Bomber 77 71 67 +4 2.0 -
6 My Boy Lollipop 81 79 71 +8 0.0 -
7 Tin Cup 74 74 64 +10 2.0 -
8 Riccardo 77 68 70 -2 0.0 -
9 Intuitive Spirit 70 57 60 -3 1.0 -
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