Official NHA Assessment

Race 5: BETWAY NATIONAL COLOUR STAKES (Listed) (For Fillies and Mares)

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Line Horse
Almond Sea
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
5 / 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    Whistle The Tune     2    61.0    1    0.00     5.0   112   117          117   +5
2    Instaworthy          2    52.0    2    0.50     5.0   94    99           99    +5
3    Almond Sea           3    61.0    3    1.80     7.5   112   112          112   +0
4    Komati River         3    52.0    4    3.55     7.5   93    94           94    +1
5    Roaming Spirit       3    52.0    5    5.65     7.5   89    94           94    +5
6    Alpine Jet           2    52.0    6    6.75     5.0   97    99           99    +2
7    Frozen Fantasy       3    54.5    7    8.75     7.5   99    99           99    +0
8    Pointer              3    52.0    8    8.95     7.5   93    94           94    +1
9    Faithful Neo         3    52.0    9    9.05     7.5   84    94           94    +10
10   Sonic Jet            3    54.5    10   10.15    7.5   99    99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Whistle The Tune 112 116 117 -1 5.0 -
2 Instaworthy 94 107 99 +8 5.0 -
3 Almond Sea Line 112 119 112 +7 7.5
4 Komati River 93 93 94 -1 7.5 -
5 Roaming Spirit 89 87 94 -7 7.5 -
6 Alpine Jet 97 97 99 -2 5.0 -
7 Frozen Fantasy 99 98 99 -1 7.5 -
8 Pointer 93 84 94 -10 7.5 -
9 Faithful Neo 84 80 94 -14 7.5 -
10 Sonic Jet 99 101 99 +2 7.5 -
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