Official NHA Assessment

Race 8: NEXT MEETING 13 APRIL KENILWORTH MIDDLE STAKES (For horses with nett rating of 89 and below)

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Line Horse
Persistance
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
7 / 12
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    Gem King             6    60.5    1    0.00     0.0   89    91           91    +2
2    Kalahari Ferrari     3    60.0    2    2.25     3.0   88    84           84    -4
3    Persistance          3    54.5    3    3.50     3.0   73    73           73    +0
4    Travel Master        4    52.0    4    4.75     3.5   67    67           67    +0
5    Captain Mike         3    54.0    5    5.25     3.0   76    72           72    -4
6    Captain Dizzy        4    58.0    6    6.75     3.5   79    79           79    +0
7    Captain's Knot       3    60.0    7    12.00    3.0   87    84           84    -3
8    Trivial Matter       3    60.0    8    13.00    3.0   86    84           84    -2
9    Bonanza              3    58.0    9    15.25    3.0   81    80           80    -1
10   Noosa Princess       4    53.0    10   16.50    3.5   71    69           69    -2
11   Legitimise           4    54.0    11   17.25    3.5   70    71           71    +1
99   Silver Salmon        3    58.0    99   0.00     3.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gem King 89 108 91 +17 0.0 -
2 Kalahari Ferrari 88 87 84 +3 3.0 -
3 Persistance Line 73 50 73 -23 3.0
4 Travel Master 67 65 67 -2 3.5 -
5 Captain Mike 76 39 72 -33 3.0 -
6 Captain Dizzy 79 96 79 +17 3.5 -
7 Captain's Knot 87 68 84 -16 3.0 -
8 Trivial Matter 86 82 84 -2 3.0 -
9 Bonanza 81 57 80 -23 3.0 -
10 Noosa Princess 71 66 69 -3 3.5 -
11 Legitimise 70 66 71 -5 3.5 -
99 Silver Salmon - 65 80 -15 3.0 -
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