Official NHA Assessment

Race 8: SPINAWINA SLOTS CAPE SUMMER STAYERS HANDICAP (Listed) (Open Handicap)

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Line Horse
One Way Traffic
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
2 / 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    Aragosta             3    62.0    1    0.00     9.0   114   104          114   +0
2    Raiseahallelujah     7    54.5    2    2.75     0.0   99    110          110   +11
3    One Way Traffic      4    58.0    3    2.80     5.5   106   106          106   +0
4    Otto Luyken          5    54.0    4    3.30     0.0   101   108          108   +7
5    Fight Song           4    52.0    5    5.05     5.5   91    91           91    +0
6    Salvator Mundi       4    57.0    6    5.35     5.5   104   101          101   -3
7    Flower Of Saigon     4    57.5    7    9.60     5.5   105   102          102   -3
8    Linebacker           4    60.0    8    11.35    5.5   110   107          107   -3
9    With Pleasure        3    56.0    9    12.35    9.0   102   92           92    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aragosta 114 109 114 -5 9.0 -
2 Raiseahallelujah 99 103 110 -7 0.0 -
3 One Way Traffic Line 106 109 106 +3 5.5
4 Otto Luyken 101 116 108 +8 0.0 -
5 Fight Song 91 94 91 +3 5.5 -
6 Salvator Mundi 104 98 101 -3 5.5 -
7 Flower Of Saigon 105 102 102 ✓ Match 5.5 -
8 Linebacker 110 108 107 +1 5.5 -
9 With Pleasure 102 97 92 +5 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