Official NHA Assessment

Race 3: SOPHOMORE PLATE (For 3 year-olds)

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Line Horse
Royal Kingdom
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
4 / 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    Buffalo Bill         2    58.0    1    0.00     0.0   101   99           99    -2
2    All Systems Go       3    54.0    2    1.50     4.0   106   86           96    -10
3    Royal Kingdom        2    60.0    3    7.00     0.0   103   103          103   +0
4    Above The Horizon    2    58.0    4    8.00     0.0   85    99           99    +14
99   King Prawn           2    56.0    99   0.00     0.0   -     95           95    +0
99   Smiddyburn           3    55.0    99   0.00     4.0   -     85           85    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Buffalo Bill 101 107 99 +8 0.0 -
2 All Systems Go 106 102 96 +6 4.0 -
3 Royal Kingdom Line 103 103 103 ✓ Match 0.0
4 Above The Horizon 85 86 99 -13 0.0 -
99 King Prawn - 98 95 +3 0.0 -
99 Smiddyburn - 77 85 -8 4.0 -
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