Official NHA Assessment

Race 2: 4RACING THANKS & APPRECIATES LAB RACING 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
1 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
9 / 13
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    Archimides           3    60.0    1    0.00     0.5   69    70           70    +1
2    Viva De Janeiro      5    60.0    2    0.10     0.0   71    71           71    +0
3    Golden Pavilion      2    56.0    3    0.25     0.0   -     63           63    +63
4    Command Pilot        2    56.0    4    1.30     0.0   -     66           66    +66
5    Van Meijel           3    57.5    5    1.50     0.5   -     68           68    +68
6    Gimme A Diamond      2    60.0    6    3.75     0.0   74    72           72    -2
7    Tenstar              2    56.0    7    6.00     0.0   -     63           63    +63
8    Dream State          2    56.0    8    7.00     0.0   -     63           63    +63
9    Pearl Harbor         2    56.0    9    10.25    0.0   -     63           63    +63
10   Major Player         2    56.0    10   14.50    0.0   -     63           63    +63
11   Vino Dolce           2    56.0    11   14.75    0.0   -     63           63    +63
12   Circus Lights        5    60.0    12   99.99    0.0   66    71           71    +5
99   Sugar Blast          2    56.0    99   0.00     0.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Archimides 69 70 70 ✓ Match 0.5 -
2 Viva De Janeiro Line 71 50 71 -21 0.0
3 Golden Pavilion - 95 63 +32 0.0 -
4 Command Pilot - 93 66 +27 0.0 -
5 Van Meijel - 54 68 -14 0.5 -
6 Gimme A Diamond 74 54 72 -18 0.0 -
7 Tenstar - 60 63 -3 0.0 -
8 Dream State - 58 63 -5 0.0 -
9 Pearl Harbor - 62 63 -1 0.0 -
10 Major Player - 48 63 -15 0.0 -
11 Vino Dolce - - 63 -63 0.0 -
12 Circus Lights 66 64 71 -7 0.0 -
99 Sugar Blast - 102 63 +39 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