Official NHA Assessment

Race 8: NEXT MEETING 29 MARCH DURBANVILLE MR 80 HANDICAP (Open)

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Line Horse
Winchester Mansion
Reference for assessment
Exact Matches
0 / 17
Calculated = Official
Close Matches
3 / 17
Within 2 points
Significant Diffs
11 / 17
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    Sugar Mountain       3    58.5    1    0.00     2.5   83    79           83    +0
2    Tout A Fait          3    58.5    2    0.20     2.5   83    79           79    -4
3    Winchester Mansion   3    59.5    3    1.20     2.5   85    85           85    +0
4    Path Of Choice       5    59.0    4    2.70     0.0   78    87           87    +9
5    Aus Bob              3    59.5    5    3.45     2.5   85    82           82    -3
6    Que Shiraz           3    60.0    6    3.75     2.5   86    83           83    -3
7    Solar Power          3    59.0    7    4.50     2.5   84    80           80    -4
8    On The Road Again    3    57.0    8    4.70     2.5   80    76           76    -4
9    Tizona               3    59.0    9    5.45     2.5   84    80           80    -4
10   Ridge To Reef        3    55.0    10   26.70    2.5   76    72           72    -4
99   Fort Red             4    57.0    99   0.00     1.5   -     78           78    +0
99   Night Ruler          3    61.0    99   0.00     2.5   -     84           84    +0
99   Superior Leader      4    53.0    99   0.00     1.5   -     70           70    +0
99   Ticket To Ride       4    53.5    99   0.00     1.5   -     71           71    +0
99   Admiralty Arch       3    56.5    99   0.00     2.5   -     75           75    +0
99   The Futurist         3    57.0    99   0.00     2.5   -     76           76    +0
99   All Lit Up           4    58.5    99   0.00     1.5   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sugar Mountain 83 122 83 +39 2.5 -
2 Tout A Fait 83 80 79 +1 2.5 -
3 Winchester Mansion Line 85 129 85 +44 2.5
4 Path Of Choice 78 68 87 -19 0.0 -
5 Aus Bob 85 70 82 -12 2.5 -
6 Que Shiraz 86 72 83 -11 2.5 -
7 Solar Power 84 88 80 +8 2.5 -
8 On The Road Again 80 79 76 +3 2.5 -
9 Tizona 84 83 80 +3 2.5 -
10 Ridge To Reef 76 70 72 -2 2.5 -
99 Fort Red - 66 78 -12 1.5 -
99 Night Ruler - 75 84 -9 2.5 -
99 Superior Leader - 64 70 -6 1.5 -
99 Ticket To Ride - 62 71 -9 1.5 -
99 Admiralty Arch - 77 75 +2 2.5 -
99 The Futurist - 104 76 +28 2.5 -
99 All Lit Up - 76 81 -5 1.5 -
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