Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Main Mission
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 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    Strewn Sky           2    60.0    1    0.00     0.0   75    66           66    -9
2    Taxhaven             4    60.0    2    5.50     1.0   87    64           77    -10
3    Main Mission         2    60.0    3    6.75     0.0   66    66           66    +0
4    Japanese Maple       4    60.0    4    7.00     1.0   63    64           64    +1
5    Russian Lotus        3    60.0    5    14.25    2.5   -     61           61    +61
6    Douglas Dragon       3    60.0    6    22.25    2.5   78    61           68    -10
7    Hat Furious          4    60.0    7    27.75    1.0   62    64           64    +2
99   Master Tik Tok       5    58.5    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 Strewn Sky 75 69 66 +3 0.0 -
2 Taxhaven 87 96 77 +19 1.0 -
3 Main Mission Line 66 71 66 +5 0.0
4 Japanese Maple 63 56 64 -8 1.0 -
5 Russian Lotus - 59 61 -2 2.5 -
6 Douglas Dragon 78 89 68 +21 2.5 -
7 Hat Furious 62 53 64 -11 1.0 -
99 Master Tik Tok - 80 63 +17 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