Official NHA Assessment

Race 2: 4RACING.TV MAIDEN HANDICAP (F & M) (For Maiden F & M with 3 or more runs)

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Line Horse
Southern Style
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 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    Tried And True       5    59.5    1    0.00     0.0   75    73           70    -5
2    Queen Britanna       2    52.0    2    1.50     0.0   59    61           61    +2
3    Southern Style       5    58.5    3    2.80     0.0   73    73           73    +0
4    Smelting             7    60.0    4    3.40     0.0   59    75           75    +16
5    Sky Velocity         5    54.5    5    4.80     0.0   65    63           63    -2
6    Voshaarnooi          2    53.5    6    5.40     0.0   63    61           61    -2
7    Gaetana              3    57.5    7    6.40     8.5   55    52           52    -3
8    Green Bubbles        2    56.0    8    6.90     0.0   68    66           66    -2
9    Hertzoggie           2    53.0    9    7.20     0.0   62    60           60    -2
10   Moonlit Ruby         3    52.0    10   11.60    8.5   29    41           41    +12
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tried And True 75 75 70 +5 0.0 -
2 Queen Britanna 59 57 61 -4 0.0 -
3 Southern Style Line 73 54 73 -19 0.0
4 Smelting 59 52 75 -23 0.0 -
5 Sky Velocity 65 57 63 -6 0.0 -
6 Voshaarnooi 63 50 61 -11 0.0 -
7 Gaetana 55 26 52 -26 8.5 -
8 Green Bubbles 68 66 66 ✓ Match 0.0 -
9 Hertzoggie 62 58 60 -2 0.0 -
10 Moonlit Ruby 29 24 41 -17 8.5 -
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