Official NHA Assessment

Race 2: OFF THE RAILS MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Sky Cafe
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    Sky Cafe             3    60.0    1    0.00     4.0   64    64           64    +0
2    Madame Zee           3    59.0    2    1.40     4.0   60    65           65    +5
3    Stealth Attack       2    59.0    3    1.45     0.0   73    73           73    +0
4    Taste Maker          3    60.0    4    1.75     4.0   52    67           67    +15
5    Vermacilli           3    57.5    5    2.85     4.0   -     61           61    +61
6    Isiphetho            2    59.0    6    2.90     0.0   66    72           72    +6
7    French Princess      2    59.0    7    4.10     0.0   58    71           71    +13
8    Bonnie Star          4    57.5    8    15.80    2.5   -     62           62    +62
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sky Cafe Line 64 58 64 -6 4.0
2 Madame Zee 60 69 65 +4 4.0 -
3 Stealth Attack 73 52 73 -21 0.0 -
4 Taste Maker 52 54 67 -13 4.0 -
5 Vermacilli - 54 61 -7 4.0 -
6 Isiphetho 66 63 72 -9 0.0 -
7 French Princess 58 65 71 -6 0.0 -
8 Bonnie Star - 23 62 -39 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