Official NHA Assessment

Race 3: TAB TELEBET 0861 000 822 GUINEAS PLATE (For 3 year olds)

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Line Horse
Play Act
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 7
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    My Best Shot         3    60.0    1    0.00     7.0   105   90           90    -15
2    Play Act             2    54.0    2    3.25     0.0   94    94           94    +0
3    Sakurajima           3    54.0    3    3.50     7.0   101   79           91    -10
4    Coral Creek          3    54.0    4    11.25    7.0   79    78           78    -1
5    Can't Say No         3    55.0    5    12.00    7.0   88    80           80    -8
6    Pomo's Big Spender   3    54.0    6    14.25    7.0   82    78           78    -4
99   Lucky Spirit         3    54.0    99   0.00     7.0   -     78           78    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My Best Shot 105 116 90 +26 7.0 -
2 Play Act Line 94 80 94 -14 0.0
3 Sakurajima 101 90 91 -1 7.0 -
4 Coral Creek 79 73 78 -5 7.0 -
5 Can't Say No 88 83 80 +3 7.0 -
6 Pomo's Big Spender 82 67 78 -11 7.0 -
99 Lucky Spirit - 70 78 -8 7.0 -
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