Official NHA Assessment

Race 4: GREYVILLE CONVENTION CENTRE FM 65 HANDICAP (F & M) (For Fillies and Mares)

Back to Race
Line Horse
Whatsupbuttacup
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Canford Queen        3    59.5    1    0.00     2.0   68    58           68    +0
2    Doctor's Orders      2    57.5    2    0.05     0.0   64    58           58    -6
3    Whatsupbuttacup      3    60.0    3    1.25     2.0   65    65           65    +0
4    English Primrose     3    54.5    4    3.15     2.0   54    51           51    -3
5    Vermacilli           3    55.0    5    3.20     2.0   55    52           52    -3
6    Hot Strike           7    60.0    6    3.70     0.0   65    66           66    +1
7    Mythical Tune        3    53.5    7    4.45     2.0   51    47           47    -4
8    Natalia              2    48.5    8    5.95     0.0   50    40           40    -10
9    Top Ten              4    55.0    9    6.75     1.0   55    51           51    -4
10   Burmese Tiara        4    61.5    10   12.05    1.0   68    64           64    -4
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Canford Queen 68 59 68 -9 2.0 -
2 Doctor's Orders 64 79 58 +21 0.0 -
3 Whatsupbuttacup Line 65 65 65 ✓ Match 2.0
4 English Primrose 54 58 51 +7 2.0 -
5 Vermacilli 55 54 52 +2 2.0 -
6 Hot Strike 65 59 66 -7 0.0 -
7 Mythical Tune 51 50 47 +3 2.0 -
8 Natalia 50 50 40 +10 0.0 -
9 Top Ten 55 50 51 -1 1.0 -
10 Burmese Tiara 68 68 64 +4 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