Official NHA Assessment

Race 6: NATIONAL COLOUR STAKES (Listed) (For Fillies and Mares)

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Line Horse
Alula's Star
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 9
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    Golden Sickle        4    53.0    1    0.00     9.0   102   91           91    -11
2    Alula's Star         3    60.0    2    2.25     7.5   108   108          108   +0
3    Flowerbomb           2    58.5    3    2.30     5.0   105   110          110   +5
4    Moonshiningthrough   3    56.5    4    2.35     7.5   101   101          101   +0
5    Ice Star             2    53.0    5    2.50     5.0   95    99           99    +4
6    On Cue               3    53.0    6    3.25     7.5   81    94           94    +13
7    No Filter            4    53.0    7    4.25     9.0   94    91           91    -3
8    Rose For Trippi      2    53.0    8    5.00     5.0   88    99           99    +11
9    Full Velocity        4    58.0    9    7.25     9.0   104   101          101   -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Golden Sickle 102 121 91 +30 9.0 -
2 Alula's Star Line 108 102 108 -6 7.5
3 Flowerbomb 105 87 110 -23 5.0 -
4 Moonshiningthrough 101 96 101 -5 7.5 -
5 Ice Star 95 112 99 +13 5.0 -
6 On Cue 81 81 94 -13 7.5 -
7 No Filter 94 100 91 +9 9.0 -
8 Rose For Trippi 88 80 99 -19 5.0 -
9 Full Velocity 104 94 101 -7 9.0 -
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