Official NHA Assessment

Race 3: CELEBRATING CENTURION MEMBER JOHN KOSTER'S BIRTHDAY MAIDEN JUVENILE PLATE (Fillies) (For 2 year old Fillies)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 10
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    Splash Of Colour     2    58.5    1    0.00     0.5   -     -            -     +0
2    Beach Verse          2    60.0    2    2.25     0.5   -     -            -     +0
3    Piteraq              2    60.0    3    3.75     0.5   -     -            -     +0
4    Chickasaw            2    60.0    4    4.25     0.5   -     -            -     +0
5    Lebombo Gold         2    60.0    5    4.75     0.5   -     -            -     +0
6    Morfeliha            2    60.0    6    5.50     0.5   -     -            -     +0
7    Up In Flames         2    60.0    7    5.60     0.5   -     -            -     +0
8    Endeared             2    56.0    8    6.60     0.5   -     -            -     +0
9    Island Jewel         2    60.0    9    8.60     0.5   -     -            -     +0
10   Zarafa               2    60.0    10   14.10    0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Splash Of Colour - 76 - +76 0.5 -
2 Beach Verse - 97 - +97 0.5 -
3 Piteraq - 73 - +73 0.5 -
4 Chickasaw - 67 - +67 0.5 -
5 Lebombo Gold - 75 - +75 0.5 -
6 Morfeliha - 74 - +74 0.5 -
7 Up In Flames - 74 - +74 0.5 -
8 Endeared - 70 - +70 0.5 -
9 Island Jewel - 51 - +51 0.5 -
10 Zarafa - - - ✓ Match 0.5 -
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