Official NHA Assessment

Race 5: play.tabonlne.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Kelp Forest
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    Kelp Forest          5    60.0    1    0.00     0.0   77    77           77    +0
2    Final Edition        5    60.0    2    0.20     0.0   -     77           77    +77
3    Rainbow Colours      3    60.0    3    1.45     3.0   72    74           74    +2
4    Otis The Brave       3    60.0    4    1.95     3.0   -     74           74    +74
5    Hawk Circle          2    60.0    5    2.95     0.0   77    79           79    +2
6    All About Ronnie     3    60.0    6    3.95     3.0   62    72           72    +10
7    First Time Lucky     3    60.0    7    5.45     3.0   43    71           71    +28
8    Global Speed         3    60.0    8    8.20     3.0   56    71           71    +15
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kelp Forest Line 77 81 77 +4 0.0
2 Final Edition - 78 77 +1 0.0 -
3 Rainbow Colours 72 63 74 -11 3.0 -
4 Otis The Brave - 59 74 -15 3.0 -
5 Hawk Circle 77 68 79 -11 0.0 -
6 All About Ronnie 62 67 72 -5 3.0 -
7 First Time Lucky 43 50 71 -21 3.0 -
8 Global Speed 56 52 71 -19 3.0 -
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