Official NHA Assessment

Race 3: CHAMPIONSHIPS FINALE 25 APRIL CALL 011 681 1796 TO BOOK MAIDEN PLATE (For all Maidens)

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Line Horse
Emerald City
Reference for assessment
Exact Matches
2 / 6
Calculated = Official
Close Matches
3 / 6
Within 2 points
Significant Diffs
0 / 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    Pompeii Shield       4    60.0    1    0.00     1.5   69    67           67    -2
2    Twelfth Of Never     2    56.5    2    0.30     0.0   74    68           68    -6
3    Emerald City         2    60.0    3    3.80     0.0   71    71           71    +0
4    Asiah's Tiara        3    56.5    4    4.70     3.5   56    56           56    +0
5    Royale Jacket        2    60.0    5    5.10     0.0   74    70           70    -4
6    Greenside Girl       3    56.5    6    5.50     3.5   62    56           56    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pompeii Shield 69 72 67 +5 1.5 -
2 Twelfth Of Never 74 72 68 +4 0.0 -
3 Emerald City Line 71 71 71 ✓ Match 0.0
4 Asiah's Tiara 56 56 56 ✓ Match 3.5 -
5 Royale Jacket 74 72 70 +2 0.0 -
6 Greenside Girl 62 61 56 +5 3.5 -
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