Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING TUESDAY 3 FEBRUARY FM 66 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Queen Of Jazz
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
4 / 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    Cape Capri           2    56.0    1    0.00     3.5   58    66           58    +0
2    Queen Of Jazz        2    54.5    2    1.25     3.5   63    63           63    +0
3    Penny's World        3    59.0    3    1.75     5.0   64    69           69    +5
4    Japanese Garden      2    61.0    4    2.00     3.5   75    76           76    +1
5    Champagne Problems   2    61.0    5    2.05     3.5   68    76           76    +8
6    Free World           3    59.0    6    2.30     5.0   64    69           69    +5
7    Opera Verse          4    49.0    7    2.80     6.0   52    47           47    -5
8    String Of Lights     4    58.5    8    3.55     6.0   66    66           66    +0
9    Stu's Girl           3    56.5    9    3.80     5.0   67    64           64    -3
10   Are You Sure         2    63.0    10   5.30     3.5   72    80           80    +8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cape Capri 58 63 58 +5 3.5 -
2 Queen Of Jazz Line 63 63 63 ✓ Match 3.5
3 Penny's World 64 61 69 -8 5.0 -
4 Japanese Garden 75 71 76 -5 3.5 -
5 Champagne Problems 68 68 76 -8 3.5 -
6 Free World 64 62 69 -7 5.0 -
7 Opera Verse 52 50 47 +3 6.0 -
8 String Of Lights 66 66 66 ✓ Match 6.0 -
9 Stu's Girl 67 67 64 +3 5.0 -
10 Are You Sure 72 64 80 -16 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