Official NHA Assessment

Race 2: Call now! Or play online. www.trackandball.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Sir William
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
5 / 14
Within 2 points
Significant Diffs
8 / 14
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    Kumemori             5    60.0    1    0.00     0.0   69    69           69    +0
2    Future Saint         4    59.0    2    4.30     2.5   -     62           62    +62
3    Madison Valley       4    59.0    3    7.60     2.5   -     62           62    +62
4    Helsinki             2    59.0    4    10.00    0.0   83    67           73    -10
5    Sir William          3    60.0    5    11.50    4.0   61    61           61    +0
6    Russian Writer       3    60.0    6    14.50    4.0   50    61           61    +11
7    Lightning Jimmy      4    59.0    7    20.50    2.5   73    62           63    -10
8    Allrite              3    59.0    8    21.55    4.0   -     59           59    +59
9    Lucky Murphy         3    59.0    9    26.95    4.0   60    59           59    -1
10   Mo King              2    59.0    10   30.15    0.0   72    67           67    -5
11   Roy's Ruffian        6    58.5    11   30.95    0.0   -     66           66    +66
12   Obadiah              2    59.0    12   45.95    0.0   -     67           67    +67
99   Teriyaki             4    59.0    99   0.00     2.5   -     62           62    +0
99   Olverston            2    60.0    99   0.00     0.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kumemori 69 71 69 +2 0.0 -
2 Future Saint - 53 62 -9 2.5 -
3 Madison Valley - 116 62 +54 2.5 -
4 Helsinki 83 72 73 -1 0.0 -
5 Sir William Line 61 59 61 -2 4.0
6 Russian Writer 50 47 61 -14 4.0 -
7 Lightning Jimmy 73 48 63 -15 2.5 -
8 Allrite - 63 59 +4 4.0 -
9 Lucky Murphy 60 57 59 -2 4.0 -
10 Mo King 72 66 67 -1 0.0 -
11 Roy's Ruffian - 20 66 -46 0.0 -
12 Obadiah - 20 67 -47 0.0 -
99 Teriyaki - 71 62 +9 2.5 -
99 Olverston - 45 69 -24 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