Official NHA Assessment

Race 3: WWW.TAB4RACING.COM MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Messalina
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    Roaming Spirit       3    60.0    1    0.00     4.0   80    70           70    -10
2    Messalina            3    60.0    2    0.40     4.0   75    75           75    +0
3    Trail Runner         3    60.0    3    3.00     4.0   -     72           72    +72
4    Cape Saffron         3    60.0    4    3.70     4.0   -     71           71    +71
5    Lilac Snow           2    60.0    5    8.70     0.0   68    78           78    +10
6    Amber Eyes           3    56.0    6    11.00    4.0   62    62           62    +0
7    Oasis                3    60.0    7    12.00    4.0   -     70           70    +70
8    Chasing The Crown    3    58.5    8    12.30    4.0   57    67           67    +10
99   Lapis Lazuli         3    60.0    99   0.00     4.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Roaming Spirit 80 87 70 +17 4.0 -
2 Messalina Line 75 71 75 -4 4.0
3 Trail Runner - 75 72 +3 4.0 -
4 Cape Saffron - 82 71 +11 4.0 -
5 Lilac Snow 68 60 78 -18 0.0 -
6 Amber Eyes 62 50 62 -12 4.0 -
7 Oasis - - 70 -70 4.0 -
8 Chasing The Crown 57 46 67 -21 4.0 -
99 Lapis Lazuli - 59 70 -11 4.0 -
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