Official NHA Assessment

Race 3: TAKE A BET WINA NUMBA NUMBA MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Outer Dimension
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
9 / 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    Fairy Circle         2    58.0    1    0.00     0.0   70    69           69    -1
2    A Touch Of Sugar     2    60.0    2    1.00     0.0   57    77           77    +20
3    Outer Dimension      2    58.0    3    2.00     0.0   72    72           72    +0
4    Springer             2    58.0    4    3.25     0.0   81    71           71    -10
5    Dee Day              4    58.0    5    3.75     4.0   -     62           62    +62
6    Voshaarnooi          2    60.0    6    7.50     0.0   54    73           73    +19
7    Venetian Moonlight   3    58.0    7    7.75     7.0   67    55           57    -10
8    She's A Klawer       2    60.0    8    8.50     0.0   56    73           73    +17
9    Patches Of Grey      4    58.0    9    10.75    4.0   -     61           61    +61
10   Like A Butterfly     3    58.0    10   11.00    7.0   -     55           55    +55
11   Flying Diamond       2    54.0    11   13.75    0.0   55    61           61    +6
12   Hartenbos            2    58.0    12   17.00    0.0   -     69           69    +69
13   Amor Perdido         3    60.0    13   27.00    7.0   -     59           59    +59
14   Big Blue Sky         3    56.5    14   31.00    7.0   -     52           52    +52
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fairy Circle 70 52 69 -17 0.0 -
2 A Touch Of Sugar 57 58 77 -19 0.0 -
3 Outer Dimension Line 72 70 72 -2 0.0
4 Springer 81 75 71 +4 0.0 -
5 Dee Day - 53 62 -9 4.0 -
6 Voshaarnooi 54 50 73 -23 0.0 -
7 Venetian Moonlight 67 58 57 +1 7.0 -
8 She's A Klawer 56 50 73 -23 0.0 -
9 Patches Of Grey - 62 61 +1 4.0 -
10 Like A Butterfly - 54 55 -1 7.0 -
11 Flying Diamond 55 48 61 -13 0.0 -
12 Hartenbos - 47 69 -22 0.0 -
13 Amor Perdido - - 59 -59 7.0 -
14 Big Blue Sky - - 52 -52 7.0 -
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