Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE FM 67 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Roy's Rocker
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 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    Let It Snow          2    55.5    1    0.00     0.0   74    72           74    +0
2    Royal Kitty          5    56.5    2    0.10     0.0   60    74           74    +14
3    Miss Lialah          4    51.0    3    0.20     5.0   57    53           53    -4
4    Roy's Rocker         3    54.5    4    2.60     8.0   56    56           56    +0
5    Bell Starbuster      4    54.0    5    3.50     5.0   55    60           60    +5
6    Hatta                4    53.5    6    4.20     5.0   54    59           59    +5
7    Puff Of Smoke        3    59.0    7    5.00     8.0   66    63           63    -3
8    Forged In Ice        3    58.5    8    6.20     8.0   68    62           62    -6
9    Amberglo Star        5    49.5    9    9.80     0.0   51    60           60    +9
10   Victory Vision       3    57.0    10   16.60    8.0   62    59           59    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Let It Snow 74 61 74 -13 0.0 -
2 Royal Kitty 60 66 74 -8 0.0 -
3 Miss Lialah 57 65 53 +12 5.0 -
4 Roy's Rocker Line 56 53 56 -3 8.0
5 Bell Starbuster 55 52 60 -8 5.0 -
6 Hatta 54 59 59 ✓ Match 5.0 -
7 Puff Of Smoke 66 51 63 -12 8.0 -
8 Forged In Ice 68 57 62 -5 8.0 -
9 Amberglo Star 51 50 60 -10 0.0 -
10 Victory Vision 62 51 59 -8 8.0 -
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