Official NHA Assessment

Race 2: RACING240 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Ladonna Mia
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
0 / 13
Within 2 points
Significant Diffs
12 / 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    Sing Girl Sing       3    60.0    1    0.00     4.5   68    67           67    -1
2    Tide Is High         3    60.0    2    0.10     4.5   62    67           67    +5
3    Sugar Snap           3    60.0    3    6.35     4.5   67    67           67    +0
4    Rio Supremo          3    60.0    4    7.85     4.5   69    67           67    -2
5    Ladonna Mia          3    60.0    5    10.35    4.5   67    67           67    +0
6    Twice The Secret     3    60.0    6    10.40    4.5   60    67           67    +7
7    Rose Of Mine         3    60.0    7    12.15    4.5   75    67           67    -8
8    Black Peppercorn     3    60.0    8    14.40    4.5   53    67           67    +14
9    Gimme A Ruby         3    60.0    9    18.65    4.5   56    67           67    +11
10   Leni Girl            3    57.5    10   24.90    4.5   -     62           62    +62
11   Mezzyoona            4    60.0    11   28.15    5.0   42    66           66    +24
12   Cosmogenic Rain      3    60.0    12   31.15    4.5   -     67           67    +67
99   Gailiea              3    60.0    99   0.00     4.5   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sing Girl Sing 68 62 67 -5 4.5 -
2 Tide Is High 62 57 67 -10 4.5 -
3 Sugar Snap 67 59 67 -8 4.5 -
4 Rio Supremo 69 52 67 -15 4.5 -
5 Ladonna Mia Line 67 59 67 -8 4.5
6 Twice The Secret 60 60 67 -7 4.5 -
7 Rose Of Mine 75 58 67 -9 4.5 -
8 Black Peppercorn 53 52 67 -15 4.5 -
9 Gimme A Ruby 56 53 67 -14 4.5 -
10 Leni Girl - 45 62 -17 4.5 -
11 Mezzyoona 42 39 66 -27 5.0 -
12 Cosmogenic Rain - 30 67 -37 4.5 -
99 Gailiea - 50 67 -17 4.5 -
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