Official NHA Assessment

Race 7: RACEHORSE OWNERS ASSOCIATION STAKES (Listed) (For 3 year-olds)

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Line Horse
Play Act
Reference for assessment
Exact Matches
1 / 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    On My Honour         3    60.0    1    0.00     8.0   90    72           72    -18
2    Sakurajima           3    60.0    2    4.50     8.0   88    72           78    -10
3    My Best Shot         3    60.0    3    6.00     8.0   105   72           95    -10
4    Play Act             2    60.0    4    8.00     0.0   88    88           88    +0
5    We Have Touchdown    3    60.0    5    12.75    8.0   96    72           86    -10
6    The Mask             2    60.0    6    27.00    0.0   91    88           88    -3
7    Walt Whitman         2    60.0    7    28.25    0.0   89    88           88    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 On My Honour 90 116 72 +44 8.0 -
2 Sakurajima 88 90 78 +12 8.0 -
3 My Best Shot 105 116 95 +21 8.0 -
4 Play Act Line 88 80 88 -8 0.0
5 We Have Touchdown 96 89 86 +3 8.0 -
6 The Mask 91 84 88 -4 0.0 -
7 Walt Whitman 89 88 88 ✓ 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