Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE FM 72 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Princess Santo
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Magicallee           4    55.0    1    0.00     11.0  62    62           62    +0
2    Princess Santo       4    53.5    2    3.00     11.0  59    59           59    +0
3    Morgan La Fay        2    56.5    3    3.60     6.5   78    74           74    -4
4    Time Silhouette      3    54.5    4    4.40     9.5   61    64           64    +3
5    Princess Tea         3    56.0    5    4.80     9.5   72    67           67    -5
6    Lady Heist           2    59.0    6    6.90     6.5   83    79           79    -4
7    Perfect Appeal       3    55.0    7    7.50     9.5   61    65           65    +4
99   Dunyaa (AUS)         4    56.5    99   0.00     11.0  -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Magicallee 62 65 62 +3 11.0 -
2 Princess Santo Line 59 50 59 -9 11.0
3 Morgan La Fay 78 98 74 +24 6.5 -
4 Time Silhouette 61 56 64 -8 9.5 -
5 Princess Tea 72 77 67 +10 9.5 -
6 Lady Heist 83 97 79 +18 6.5 -
7 Perfect Appeal 61 58 65 -7 9.5 -
99 Dunyaa (AUS) - 71 65 +6 11.0 -
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