Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING MONDAY 1 SEPTEMBER CLASSIFIED STAKES (For horses with nett rating of 74 and below)

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Line Horse
Jambo Sana
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 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    Coastal Path         5    60.0    1    0.00     0.0   74    80           80    +6
2    Jambo Sana           2    57.0    2    0.25     0.0   74    74           74    +0
3    Strange Magic        5    57.0    3    2.50     0.0   73    76           76    +3
4    Her Royalty          3    52.5    4    3.00     8.5   71    50           61    -10
5    Potent Captain       4    52.0    5    3.25     6.0   64    54           54    -10
6    Chief Runner         3    58.0    6    4.25     8.5   71    60           61    -10
7    Blue Palace          2    57.0    7    4.30     0.0   73    74           74    +1
8    Move To Prove        2    54.0    8    4.55     0.0   63    68           68    +5
9    Mighty Mac           5    56.0    9    5.30     0.0   63    72           72    +9
99   King Viserys         4    58.0    99   0.00     6.0   -     64           64    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coastal Path 74 77 80 -3 0.0 -
2 Jambo Sana Line 74 74 74 ✓ Match 0.0
3 Strange Magic 73 69 76 -7 0.0 -
4 Her Royalty 71 68 61 +7 8.5 -
5 Potent Captain 64 54 54 ✓ Match 6.0 -
6 Chief Runner 71 59 61 -2 8.5 -
7 Blue Palace 73 69 74 -5 0.0 -
8 Move To Prove 63 63 68 -5 0.0 -
9 Mighty Mac 63 52 72 -20 0.0 -
99 King Viserys - 73 64 +9 6.0 -
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