Official NHA Assessment

Race 3: TAB 4RACING APP FM 72 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Twilight Bay
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 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    Hoerikwaggo          3    60.5    1    0.00     7.0   74    57           74    +0
2    Lady Bomber          3    58.0    2    1.25     7.0   69    56           59    -10
3    Twilight Bay         2    59.5    3    1.30     0.0   72    72           72    +0
4    Chroniclesofnania    5    51.5    4    1.40     0.0   60    56           56    -4
5    Blue Palace          2    60.0    5    2.90     0.0   73    72           72    -1
6    Strange Magic        5    56.5    6    3.15     0.0   73    65           65    -8
7    Greenlight Dancer    2    58.0    7    3.90     0.0   69    67           67    -2
8    Genteel              3    57.5    8    5.40     7.0   68    51           58    -10
9    Kamakazi             4    57.0    9    6.65     4.5   74    55           64    -10
99   One Giant Leap       3    60.5    99   0.00     7.0   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hoerikwaggo 74 85 74 +11 7.0 -
2 Lady Bomber 69 87 59 +28 7.0 -
3 Twilight Bay Line 72 72 72 ✓ Match 0.0
4 Chroniclesofnania 60 60 56 +4 0.0 -
5 Blue Palace 73 69 72 -3 0.0 -
6 Strange Magic 73 69 65 +4 0.0 -
7 Greenlight Dancer 69 65 67 -2 0.0 -
8 Genteel 68 68 58 +10 7.0 -
9 Kamakazi 74 73 64 +9 4.5 -
99 One Giant Leap - 74 57 +17 7.0 -
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