Official NHA Assessment

Race 2: TAB 4RACING APP JUVENILE PLATE (For 2 year olds)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 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    Mercantour           5    60.0    1    0.00     0.0   -     -            -     +0
2    Ridgerunner          2    58.0    2    0.80     1.0   -     -            -     +0
3    Boisterous           2    55.0    3    2.00     1.0   -     -            -     +0
4    Nyali Beach          2    52.5    4    2.40     1.0   -     -            -     +0
5    Gimme A Diamond      2    55.0    5    5.40     1.0   -     -            -     +0
6    Dungeons             2    53.5    6    5.60     1.0   -     -            -     +0
7    Hertzoggie           2    52.5    7    7.30     1.0   -     -            -     +0
8    Circus Lights        5    55.0    8    10.50    0.0   -     -            -     +0
99   Chasin               2    55.0    99   0.00     1.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mercantour - 113 - +113 0.0 -
2 Ridgerunner - 90 - +90 1.0 -
3 Boisterous - 87 - +87 1.0 -
4 Nyali Beach - 70 - +70 1.0 -
5 Gimme A Diamond - 54 - +54 1.0 -
6 Dungeons - 73 - +73 1.0 -
7 Hertzoggie - 58 - +58 1.0 -
8 Circus Lights - 64 - +64 0.0 -
99 Chasin - 64 - - 1.0 -
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