Official NHA Assessment

Race 5: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
Zeus
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 8
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    Marauding Horde      4    52.0    1    0.00     3.0   99    103          103   +4
2    Zeus                 3    60.0    2    2.00     6.0   117   117          117   +0
3    Battleground         5    52.0    3    2.40     0.0   96    113          113   +17
4    Raiseahallelujah     7    54.0    4    5.40     0.0   103   113          113   +10
5    Arumugam             6    52.0    5    6.65     0.0   94    109          109   +15
6    Crimson King         7    56.0    6    19.65    0.0   106   117          117   +11
7    Luthuli              5    52.0    7    30.75    0.0   81    109          109   +28
99   Crepuscolo           4    52.0    99   0.00     3.0   -     103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Marauding Horde 99 112 103 +9 3.0 -
2 Zeus Line 117 117 117 ✓ Match 6.0
3 Battleground 96 92 113 -21 0.0 -
4 Raiseahallelujah 103 103 113 -10 0.0 -
5 Arumugam 94 74 109 -35 0.0 -
6 Crimson King 106 105 117 -12 0.0 -
7 Luthuli 81 74 109 -35 0.0 -
99 Crepuscolo - 58 103 -45 3.0 -
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