Official NHA Assessment

Race 9: CELEBRATING CENTURION MEMBER ROSS KIESWETTER'S BIRTHDAY C STAKES (For All Horses with a nett rating of 83 & below)

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Line Horse
Night Tiger
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 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    Flying Finley        3    64.0    1    0.00     2.5   84    77           77    -7
2    Bluff On Bluff       3    64.0    2    1.25     2.5   82    77           77    -5
3    Night Tiger          5    60.0    3    1.45     0.0   74    74           74    +0
4    The Us Of A          3    64.0    4    1.85     2.5   83    77           77    -6
5    Counter Attack       3    64.0    5    2.35     2.5   79    77           77    -2
6    Tough Terrain        5    64.0    6    3.35     0.0   81    82           82    +1
7    King Viserys         4    57.0    7    4.85     0.0   67    68           68    +1
8    Sugarbush            3    59.0    8    5.15     2.5   79    67           69    -10
9    Piroshka             5    59.0    9    5.65     0.0   76    72           72    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Flying Finley 84 88 77 +11 2.5 -
2 Bluff On Bluff 82 80 77 +3 2.5 -
3 Night Tiger Line 74 67 74 -7 0.0
4 The Us Of A 83 104 77 +27 2.5 -
5 Counter Attack 79 67 77 -10 2.5 -
6 Tough Terrain 81 81 82 -1 0.0 -
7 King Viserys 67 73 68 +5 0.0 -
8 Sugarbush 79 72 69 +3 2.5 -
9 Piroshka 76 72 72 ✓ Match 0.0 -
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