Official NHA Assessment

Race 3: WSB Bet with the Best MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
K M V Retrofit
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
5 / 9
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    Shesha Ntombi        3    60.0    1    0.00     1.5   68    66           66    -2
2    Promise Of Fire      3    60.0    2    0.05     1.5   70    66           66    -4
3    K M V Retrofit       3    60.0    3    1.15     1.5   70    70           70    +0
4    Splash Of Love       2    56.0    4    2.20     0.0   -     64           64    +64
5    Alex Miller          3    60.0    5    4.60     1.5   72    66           66    -6
6    Seattle Rain         3    56.0    6    5.30     1.5   47    58           58    +11
7    Princess Charmer     2    60.0    7    12.70    0.0   60    69           69    +9
8    Miss Mayfly          3    60.0    8    13.60    1.5   55    66           66    +11
99   Oh Good Gosh         3    60.0    99   0.00     1.5   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shesha Ntombi 68 74 66 +8 1.5 -
2 Promise Of Fire 70 69 66 +3 1.5 -
3 K M V Retrofit Line 70 69 70 -1 1.5
4 Splash Of Love - 74 64 +10 0.0 -
5 Alex Miller 72 71 66 +5 1.5 -
6 Seattle Rain 47 55 58 -3 1.5 -
7 Princess Charmer 60 50 69 -19 0.0 -
8 Miss Mayfly 55 53 66 -13 1.5 -
99 Oh Good Gosh - - 66 -66 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