Official NHA Assessment

Race 3: GREYVILLE CONVENTION CENTRE MAIDEN PLATE (For all Maidens)

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Line Horse
Wylie Riley
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
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    Diani                5    57.0    1    0.00     0.0   -     78           6     +6
2    Allaroundtheworld (  3    60.0    2    0.60     8.0   56    73           73    +17
3    Wylie Riley          2    57.0    3    1.00     0.0   82    82           82    +0
4    Sirens Of Silence    2    57.0    4    2.30     0.0   68    80           80    +12
5    Fleet Commander      2    57.0    5    4.90     0.0   77    78           78    +1
6    Bello Grosso         2    57.0    6    6.70     0.0   61    78           78    +17
7    Raptor Island        2    57.0    7    8.10     0.0   -     78           78    +78
8    Bay Of Dreams        3    55.5    8    9.80     8.0   48    59           59    +11
9    Shadowbreak          4    60.0    9    27.80    5.0   -     74           74    +74
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Diani - 96 6 +90 0.0 -
2 Allaroundtheworld (GB) 56 73 73 ✓ Match 8.0 -
3 Wylie Riley Line 82 79 82 -3 0.0
4 Sirens Of Silence 68 69 80 -11 0.0 -
5 Fleet Commander 77 73 78 -5 0.0 -
6 Bello Grosso 61 72 78 -6 0.0 -
7 Raptor Island - 61 78 -17 0.0 -
8 Bay Of Dreams 48 43 59 -16 8.0 -
9 Shadowbreak - 15 74 -59 5.0 -
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