Official NHA Assessment

Race 4: GREYVILLE CONVENTION CENTRE MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Havre De Grace
Reference for assessment
Exact Matches
2 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
8 / 12
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    Elegant Act          3    60.0    1    0.00     4.0   75    70           70    -5
2    Havre De Grace       3    60.0    2    0.40     4.0   75    75           75    +0
3    Sweeter Than Honey   5    58.5    3    1.30     0.0   66    78           78    +12
4    Dynasty's Last       5    60.0    4    2.00     0.0   -     81           81    +81
5    Pink Diamond         6    60.0    5    2.90     0.0   58    80           80    +22
6    Emerald Green        4    60.0    6    3.30     2.0   70    75           75    +5
7    Trip To Nebraska     2    60.0    7    3.35     0.0   57    79           79    +22
8    Tannen Princess      3    60.0    8    3.60     4.0   75    71           71    -4
9    Flying Dragon        2    58.5    9    4.40     0.0   65    75           75    +10
10   Happyinheaven        3    60.0    10   5.90     4.0   -     70           70    +70
11   Hurricane Flight     3    60.0    11   6.10     4.0   46    70           70    +24
12   Ruthlizz Star        4    60.0    12   22.20    2.0   54    74           74    +20
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Elegant Act 75 71 70 +1 4.0 -
2 Havre De Grace Line 75 75 75 ✓ Match 4.0
3 Sweeter Than Honey 66 56 78 -22 0.0 -
4 Dynasty's Last - 61 81 -20 0.0 -
5 Pink Diamond 58 60 80 -20 0.0 -
6 Emerald Green 70 75 75 ✓ Match 2.0 -
7 Trip To Nebraska 57 55 79 -24 0.0 -
8 Tannen Princess 75 74 71 +3 4.0 -
9 Flying Dragon 65 61 75 -14 0.0 -
10 Happyinheaven - 58 70 -12 4.0 -
11 Hurricane Flight 46 55 70 -15 4.0 -
12 Ruthlizz Star 54 46 74 -28 2.0 -
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