Official NHA Assessment

Race 2: CAPE RACING SALES PROGRESS PLATE (For Maidens, 1, 2 & 3 time winners)

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Line Horse
Kaiboy
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
3 / 6
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    Symphony In White    2    56.0    1    0.00     3.0   105   95           95    -10
2    Kaiboy               2    61.5    2    1.25     3.0   106   106          106   +0
3    Makazole             3    58.0    3    3.25     4.5   106   96           96    -10
4    Bjorn Ironside       2    55.0    4    5.50     3.0   110   93           100   -10
5    Roman Agent          2    58.0    5    6.00     3.0   100   99           99    -1
6    We Have Touchdown    3    58.5    6    12.50    4.5   96    97           97    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Symphony In White 105 103 95 +8 3.0 -
2 Kaiboy Line 106 108 106 +2 3.0
3 Makazole 106 90 96 -6 4.5 -
4 Bjorn Ironside 110 105 100 +5 3.0 -
5 Roman Agent 100 99 99 ✓ Match 3.0 -
6 We Have Touchdown 96 89 97 -8 4.5 -
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