Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE B STAKES (For All Horses with a nett rating of 101 & below)

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Line Horse
Tyrconnell
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
5 / 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    Nelson Bay           4    58.5    1    0.00     1.5   88    82           82    -6
2    Winter Games         4    60.0    2    0.05     1.5   91    85           85    -6
3    Tyrconnell           5    57.0    3    0.95     0.0   86    86           86    +0
4    The Cane Train       3    51.0    4    1.15     2.5   81    69           71    -10
5    Savantrix            4    58.5    5    2.35     1.5   90    84           84    -6
6    Bowie                7    57.0    6    2.60     0.0   86    84           84    -2
7    Thisiswhatitmeans    4    60.0    7    3.00     1.5   92    87           87    -5
8    Shampompo Shampizi   7    61.5    8    4.30     0.0   96    91           91    -5
9    Queue Wing           7    57.0    9    4.80     0.0   85    82           82    -3
10   Slytherin            3    52.5    10   5.70     2.5   82    68           72    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nelson Bay 88 90 82 +8 1.5 -
2 Winter Games 91 103 85 +18 1.5 -
3 Tyrconnell Line 86 82 86 -4 0.0
4 The Cane Train 81 81 71 +10 2.5 -
5 Savantrix 90 90 84 +6 1.5 -
6 Bowie 86 82 84 -2 0.0 -
7 Thisiswhatitmeans 92 106 87 +19 1.5 -
8 Shampompo Shampizi 96 93 91 +2 0.0 -
9 Queue Wing 85 81 82 -1 0.0 -
10 Slytherin 82 70 72 -2 2.5 -
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