Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Viva De Janeiro
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 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    Dr Faustus           2    57.0    1    0.00     1.0   -     63           6     +6
2    Magic Prince         2    60.0    2    1.25     1.0   68    69           69    +1
3    Viva De Janeiro      5    60.0    3    1.35     0.0   71    71           71    +0
4    Moola Man            4    57.0    4    2.25     2.5   -     60           60    +60
5    Circus Lights        5    60.0    5    5.50     0.0   68    71           71    +3
6    Mr Spain             2    57.0    6    11.00    1.0   -     63           63    +63
99   Future Knight        3    60.0    99   0.00     2.0   -     67           67    +0
99   Care Taker           4    57.0    99   0.00     2.5   -     60           60    +0
99   Tail Of The Comet    4    54.5    99   0.00     2.5   -     55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dr Faustus - 78 6 +72 1.0 -
2 Magic Prince 68 66 69 -3 1.0 -
3 Viva De Janeiro Line 71 50 71 -21 0.0
4 Moola Man - 75 60 +15 2.5 -
5 Circus Lights 68 64 71 -7 0.0 -
6 Mr Spain - 66 63 +3 1.0 -
99 Future Knight - 47 67 -20 2.0 -
99 Care Taker - 76 60 +16 2.5 -
99 Tail Of The Comet - 79 55 +24 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