Official NHA Assessment

Race 2: TAB MAIDEN JUVENILE PLATE (For Maiden 2 year-olds)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
11 / 11
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    Colloidal Gold       2    60.0    1    0.00     0.5   -     -            -     +0
2    Master Josh          2    60.0    2    1.75     0.5   -     -            -     +0
3    Bardolino            2    60.0    3    6.00     0.5   -     -            -     +0
4    Run For Me           2    60.0    4    6.75     0.5   -     -            -     +0
5    Leadership           2    60.0    5    7.50     0.5   -     -            -     +0
6    Rockpool             2    60.0    6    9.25     0.5   -     -            -     +0
7    Green Falcon         2    60.0    7    12.00    0.5   -     -            -     +0
8    Mr Winter            2    60.0    8    12.40    0.5   -     -            -     +0
9    Hawk Circle          2    60.0    9    14.40    0.5   -     -            -     +0
10   Jack Ryan            2    60.0    10   14.80    0.5   -     -            -     +0
11   Rassieswaterbottle   2    60.0    11   38.05    0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Colloidal Gold - 72 - +72 0.5 -
2 Master Josh - 97 - +97 0.5 -
3 Bardolino - 79 - +79 0.5 -
4 Run For Me - 65 - +65 0.5 -
5 Leadership - 65 - +65 0.5 -
6 Rockpool - 104 - +104 0.5 -
7 Green Falcon - 62 - +62 0.5 -
8 Mr Winter - 58 - +58 0.5 -
9 Hawk Circle - 68 - +68 0.5 -
10 Jack Ryan - 63 - +63 0.5 -
11 Rassieswaterbottle - 21 - +21 0.5 -
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