Official NHA Assessment

Race 2: RACEHORSE OWNERS ASSOCIATION OPEN MAIDEN (F & M) (For Maidens F&M. R15 000 Win bonus ROA Members)

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Line Horse
Best Intentions
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
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    Havana Grey          3    58.0    1    0.00     3.0   -     66           6     +6
2    Best Intentions      2    55.5    2    0.50     2.0   63    63           63    +0
3    Five Star Magic      4    58.5    3    1.25     3.5   65    66           66    +1
4    Bella Attrice        2    52.0    4    2.50     2.0   64    56           56    -8
5    Gotcha Buzz          2    58.5    5    3.00     2.0   69    69           69    +0
6    Arabian Red          4    54.5    6    3.10     3.5   61    58           58    -3
7    Elusive Hunter       4    51.5    7    3.85     3.5   46    52           52    +6
8    Sunset Roar          2    53.5    8    4.10     2.0   59    59           59    +0
9    Over The Moon        3    52.0    9    6.35     3.0   45    54           54    +9
10   Yellow Jacket        2    58.0    10   6.60     2.0   -     68           68    +68
11   Carved In Stone      4    61.0    11   18.60    3.5   -     71           71    +71
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Havana Grey - 68 6 +62 3.0 -
2 Best Intentions Line 63 67 63 +4 2.0
3 Five Star Magic 65 61 66 -5 3.5 -
4 Bella Attrice 64 66 56 +10 2.0 -
5 Gotcha Buzz 69 61 69 -8 2.0 -
6 Arabian Red 61 74 58 +16 3.5 -
7 Elusive Hunter 46 50 52 -2 3.5 -
8 Sunset Roar 59 57 59 -2 2.0 -
9 Over The Moon 45 42 54 -12 3.0 -
10 Yellow Jacket - 74 68 +6 2.0 -
11 Carved In Stone - 41 71 -30 3.5 -
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