Official NHA Assessment

Race 5: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MIDDLE STAKES (For All Horses)

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Line Horse
The Last Duke
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
4 / 13
Within 2 points
Significant Diffs
4 / 13
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    The Specialist       2    58.0    1    0.00     2.5   95    102          101   +6
2    Lead The Charge      2    54.0    2    0.50     2.5   89    94           94    +5
3    The Last Duke        2    58.0    3    2.00     2.5   102   102          102   +0
4    Vibe Sa              2    56.0    4    3.00     2.5   92    98           98    +6
5    Plus Four            2    54.0    5    4.10     2.5   88    94           94    +6
6    Blizzard Snow        3    52.0    6    5.60     3.5   87    88           88    +1
7    Gimmethegoodlife     3    56.5    7    7.80     3.5   97    97           97    +0
8    Dantonfromsandton    3    60.0    8    9.10     3.5   98    104          104   +6
9    Rollwiththepunches   6    53.5    9    9.30     0.0   90    98           98    +8
10   Potberrie            2    62.0    10   12.30    2.5   105   110          110   +5
11   Secret Chord         4    56.0    11   12.50    4.0   93    95           95    +2
12   Halberdier           4    52.0    12   13.50    4.0   83    87           87    +4
13   Echo Check           2    53.5    13   14.25    2.5   98    93           93    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Specialist 95 101 101 ✓ Match 2.5 -
2 Lead The Charge 89 89 94 -5 2.5 -
3 The Last Duke Line 102 102 102 ✓ Match 2.5
4 Vibe Sa 92 92 98 -6 2.5 -
5 Plus Four 88 87 94 -7 2.5 -
6 Blizzard Snow 87 86 88 -2 3.5 -
7 Gimmethegoodlife 97 96 97 -1 3.5 -
8 Dantonfromsandton 98 96 104 -8 3.5 -
9 Rollwiththepunches 90 90 98 -8 0.0 -
10 Potberrie 105 105 110 -5 2.5 -
11 Secret Chord 93 92 95 -3 4.0 -
12 Halberdier 83 83 87 -4 4.0 -
13 Echo Check 98 98 93 +5 2.5 -
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