Official NHA Assessment

Race 4: TAB 4RACING APP FM 72 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Amazing Colours
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
4 / 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    Flight Display       2    59.0    1    0.00     0.0   78    69           78    +0
2    Welsh Starlet        3    52.5    2    0.50     5.0   62    53           53    -9
3    Tori's Girl          3    52.5    3    1.00     5.0   57    52           52    -5
4    Amazing Colours      4    53.5    4    1.05     2.5   59    59           59    +0
5    Spoil Yourself       2    60.5    5    1.15     0.0   73    78           78    +5
6    Green Isle           2    62.5    6    2.15     0.0   77    81           81    +4
7    Darling Girl         2    50.5    7    2.20     0.0   51    57           57    +6
8    Royal Missy          2    60.5    8    3.20     0.0   83    75           75    -8
9    Olive Oyl            2    59.0    9    3.30     0.0   80    72           72    -8
10   Chroniclesofnania    5    54.0    10   5.30     0.0   60    59           59    -1
11   Blind Faith          4    52.0    11   7.55     2.5   54    50           50    -4
12   True Design          3    52.0    12   10.30    5.0   52    45           45    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Flight Display 78 81 78 +3 0.0 -
2 Welsh Starlet 62 63 53 +10 5.0 -
3 Tori's Girl 57 59 52 +7 5.0 -
4 Amazing Colours Line 59 59 59 ✓ Match 2.5
5 Spoil Yourself 73 73 78 -5 0.0 -
6 Green Isle 77 77 81 -4 0.0 -
7 Darling Girl 51 54 57 -3 0.0 -
8 Royal Missy 83 83 75 +8 0.0 -
9 Olive Oyl 80 77 72 +5 0.0 -
10 Chroniclesofnania 60 60 59 +1 0.0 -
11 Blind Faith 54 52 50 +2 2.5 -
12 True Design 52 52 45 +7 5.0 -
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