Official NHA Assessment

Race 2: WSB BET WITH THE BEST MAIDEN PLATE (F & M) (Maidens F&M.R40000 Win bonus ROA Members)

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Line Horse
Ilha Da Mauricia
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
0 / 13
Within 2 points
Significant Diffs
13 / 13
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    Ilha Da Mauricia     3    60.0    1    0.00     1.5   74    74           74    +0
2    Nairobi              3    60.0    2    2.00     1.5   53    77           77    +24
3    Fiery Cliffs         3    60.0    3    2.10     1.5   57    77           77    +20
4    Celtic Vixen         4    60.0    4    5.60     0.5   49    76           76    +27
5    Afrodite             3    60.0    5    7.35     1.5   67    74           74    +7
6    Ghalaati             3    60.0    6    7.40     1.5   -     74           74    +74
7    Powers That Be       2    60.0    7    7.50     0.0   67    77           77    +10
8    Ponderosa Pine       2    60.0    8    8.00     0.0   65    77           77    +12
9    Minstrel Gallery     2    60.0    9    10.50    0.0   64    77           77    +13
10   Little Miss Kj       2    60.0    10   12.75    0.0   57    77           77    +20
11   Royal Venus          2    60.0    11   14.50    0.0   50    77           77    +27
12   Ragsaa               3    60.0    12   15.00    1.5   46    74           74    +28
13   Anna Karenina        3    60.0    13   15.75    1.5   65    74           74    +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ilha Da Mauricia Line 74 63 74 -11 1.5
2 Nairobi 53 53 77 -24 1.5 -
3 Fiery Cliffs 57 60 77 -17 1.5 -
4 Celtic Vixen 49 58 76 -18 0.5 -
5 Afrodite 67 56 74 -18 1.5 -
6 Ghalaati - 64 74 -10 1.5 -
7 Powers That Be 67 67 77 -10 0.0 -
8 Ponderosa Pine 65 63 77 -14 0.0 -
9 Minstrel Gallery 64 48 77 -29 0.0 -
10 Little Miss Kj 57 53 77 -24 0.0 -
11 Royal Venus 50 50 77 -27 0.0 -
12 Ragsaa 46 62 74 -12 1.5 -
13 Anna Karenina 65 58 74 -16 1.5 -
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