Official NHA Assessment

Race 2: TAB TELEBET 0861 000 822 MAIDEN PLATE (F & M) (For Maiden (F&M) R15 000 Win Bonus ROA Members)

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Line Horse
Mari Marie
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    Mari Marie           3    60.0    1    0.00     2.0   67    67           67    +0
2    Mediteraneangoddes   4    60.0    2    1.00     2.5   52    66           66    +14
3    Principessa Mia      3    60.0    3    3.25     2.0   63    67           67    +4
4    Hundredfifthavenue   2    60.0    4    4.75     1.0   62    69           69    +7
5    Lady Chartouche      2    60.0    5    5.50     1.0   63    69           69    +6
6    Quirk Of Fate        2    57.0    6    8.25     1.0   -     63           63    +63
7    Magenta              4    60.0    7    9.00     2.5   51    66           66    +15
8    Fly Better           3    60.0    8    9.50     2.0   54    67           67    +13
99   Dumisani             5    60.0    99   0.00     0.0   -     71           71    +0
99   Almost In Seattle    2    57.0    99   0.00     1.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mari Marie Line 67 67 67 ✓ Match 2.0
2 Mediteraneangoddes 52 58 66 -8 2.5 -
3 Principessa Mia 63 59 67 -8 2.0 -
4 Hundredfifthavenue 62 57 69 -12 1.0 -
5 Lady Chartouche 63 64 69 -5 1.0 -
6 Quirk Of Fate - 55 63 -8 1.0 -
7 Magenta 51 59 66 -7 2.5 -
8 Fly Better 54 45 67 -22 2.0 -
99 Dumisani - 60 71 -11 0.0 -
99 Almost In Seattle - 54 63 -9 1.0 -
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