Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE MR 68 HANDICAP (Open)

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Line Horse
High Moon
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    Pedro                6    56.5    1    0.00     0.0   62    71           62    +0
2    Clean Slate          3    60.0    2    0.50     9.0   69    65           65    -4
3    High Moon            4    61.5    3    0.90     7.0   71    71           71    +0
4    Brandenburg          7    59.0    4    0.95     0.0   66    80           80    +14
5    Track Commander      4    56.5    5    1.65     7.0   61    60           60    -1
6    Winter Pearl         6    60.0    6    2.35     0.0   69    80           80    +11
7    National Dream       6    58.0    7    6.35     0.0   68    74           74    +6
8    Walton Hall          5    51.5    8    8.15     0.0   59    61           61    +2
99   Beechurst            3    59.5    99   0.00     9.0   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pedro 62 72 62 +10 0.0 -
2 Clean Slate 69 70 65 +5 9.0 -
3 High Moon Line 71 71 71 ✓ Match 7.0
4 Brandenburg 66 61 80 -19 0.0 -
5 Track Commander 61 66 60 +6 7.0 -
6 Winter Pearl 69 71 80 -9 0.0 -
7 National Dream 68 68 74 -6 0.0 -
8 Walton Hall 59 50 61 -11 0.0 -
99 Beechurst - 67 59 +8 9.0 -
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