Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE MR 80 HANDICAP (Open)

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Line Horse
Ralph The Rascal
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
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    Count Marsh          7    55.0    1    0.00     0.0   70    75           70    +0
2    Botz                 3    58.5    2    0.50     6.0   77    75           75    -2
3    Captain Who          4    60.5    3    1.40     3.5   81    82           82    +1
4    Ralph The Rascal     8    58.5    4    1.45     0.0   85    85           85    +0
5    Winter Waves         7    57.5    5    1.60     0.0   75    83           83    +8
6    Maxiumus             4    57.5    6    1.90     3.5   75    76           76    +1
7    Mr Molony            3    54.5    7    3.30     6.0   69    63           63    -6
8    Parmenion            5    50.0    8    14.00    0.0   77    65           67    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Count Marsh 70 52 70 -18 0.0 -
2 Botz 77 77 75 +2 6.0 -
3 Captain Who 81 65 82 -17 3.5 -
4 Ralph The Rascal Line 85 73 85 -12 0.0
5 Winter Waves 75 77 83 -6 0.0 -
6 Maxiumus 75 88 76 +12 3.5 -
7 Mr Molony 69 67 63 +4 6.0 -
8 Parmenion 77 78 67 +11 0.0 -
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