Official NHA Assessment

Race 1: GREYVILLE CONVENTION CENTRE MAIDEN PLATE (3-year-olds) (For Maiden 3-year-olds)

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Line Horse
B Fiftytwo
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
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    Turbo Boost          2    60.0    1    0.00     0.0   -     90           6     +6
2    Ninety Nine Heros    2    60.0    2    0.75     0.0   75    94           94    +19
3    Imperial Power       4    60.0    3    1.45     6.0   -     81           81    +81
4    B Fiftytwo           4    60.0    4    2.15     6.0   81    81           81    +0
5    Global Ruler         2    58.5    5    6.15     0.0   -     87           87    +87
6    Tybalt               3    60.0    6    12.95    8.5   -     73           73    +73
7    Ubuntu Warrior       2    60.0    7    14.05    0.0   -     90           90    +90
8    The Noah             2    60.0    8    14.35    0.0   -     90           90    +90
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Turbo Boost - 68 6 +62 0.0 -
2 Ninety Nine Heros 75 83 94 -11 0.0 -
3 Imperial Power - 89 81 +8 6.0 -
4 B Fiftytwo Line 81 68 81 -13 6.0
5 Global Ruler - 63 87 -24 0.0 -
6 Tybalt - 66 73 -7 8.5 -
7 Ubuntu Warrior - 51 90 -39 0.0 -
8 The Noah - 68 90 -22 0.0 -
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