Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY WORK RIDERS MAIDEN PLATE (All Maidens.R40000 Win bonus ROA Members)

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Line Horse
This Time Round
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
6 / 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    Successful Lady      2    54.5    1    0.00     1.5   -     45           6     +6
2    Miraculous Man       3    60.0    2    0.25     2.5   60    54           54    -6
3    This Time Round      2    60.0    3    0.50     1.5   56    56           56    +0
4    Mediteraneangoddes   4    57.5    4    0.60     0.0   -     54           54    +54
5    American Hashtag     3    60.0    5    1.60     2.5   49    54           54    +5
6    Western Jack         3    60.0    6    1.65     2.5   43    54           54    +11
7    Siberian Fox         2    60.0    7    1.75     1.5   64    56           56    -8
8    Rogue Male           3    60.0    8    5.00     2.5   49    54           54    +5
9    Miss Tucker          3    57.5    9    5.10     2.5   62    49           52    -10
10   California Boy       3    60.5    10   6.35     2.5   58    55           55    -3
11   Greek Mafia          5    61.5    11   8.35     0.0   45    62           62    +17
12   Thalia's Galaxy      3    60.0    12   10.85    2.5   53    54           54    +1
13   Stealing The Moon    2    57.0    13   14.10    1.5   -     50           50    +50
99   Happiness Is         3    60.0    99   0.00     2.5   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Successful Lady - 56 6 +50 1.5 -
2 Miraculous Man 60 45 54 -9 2.5 -
3 This Time Round Line 56 54 56 -2 1.5
4 Mediteraneangoddes - 58 54 +4 0.0 -
5 American Hashtag 49 52 54 -2 2.5 -
6 Western Jack 43 50 54 -4 2.5 -
7 Siberian Fox 64 62 56 +6 1.5 -
8 Rogue Male 49 50 54 -4 2.5 -
9 Miss Tucker 62 48 52 -4 2.5 -
10 California Boy 58 53 55 -2 2.5 -
11 Greek Mafia 45 45 62 -17 0.0 -
12 Thalia's Galaxy 53 47 54 -7 2.5 -
13 Stealing The Moon - 50 50 ✓ Match 1.5 -
99 Happiness Is - 29 54 -25 2.5 -
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