Official NHA Assessment

Race 7: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

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Line Horse
Yippee Kiyay
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 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    Yippee Kiyay         2    57.0    1    0.00     5.5   99    99           99    +0
2    The Last Duke        2    60.0    2    0.10     5.5   96    105          105   +9
3    King Harald          2    56.5    3    1.20     5.5   109   98           99    -10
4    Shadowfax            2    57.0    4    3.10     5.5   104   99           99    -5
5    Can You Danse        3    56.0    5    3.35     8.5   84    91           91    +7
6    Blizzard Quest       2    56.5    6    3.60     5.5   98    98           98    +0
99   Golden Operator      2    57.0    99   0.00     5.5   -     99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Yippee Kiyay Line 99 105 99 +6 5.5
2 The Last Duke 96 102 105 -3 5.5 -
3 King Harald 109 102 99 +3 5.5 -
4 Shadowfax 104 102 99 +3 5.5 -
5 Can You Danse 84 73 91 -18 8.5 -
6 Blizzard Quest 98 92 98 -6 5.5 -
99 Golden Operator - 87 99 -12 5.5 -
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