Official NHA Assessment

Race 3: WWW.TAB4RACING.COM MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

Line Horse
Gimme A Diamond
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
10 / 12
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    Vitellius            5    60.0    1    0.00     0.0   -     70           6     +6
2    Stepping Out         2    60.0    2    1.50     0.0   72    73           73    +1
3    Gimme A Diamond      2    60.0    3    2.75     0.0   72    72           72    +0
4    American Biscuit     3    60.0    4    4.25     4.0   -     63           63    +63
5    Kanimambo            5    60.0    5    5.75     0.0   -     70           70    +70
6    Miss Christmas       3    57.0    6    6.00     4.0   -     56           56    +56
7    Lord Nelson          3    60.0    7    6.50     4.0   -     62           62    +62
8    Marquez              3    60.0    8    7.75     4.0   -     62           62    +62
9    Labrausco            2    56.0    9    8.25     0.0   58    62           62    +4
10   A Place In The Sun   5    57.0    10   9.50     0.0   -     64           64    +64
11   World Heritage       2    57.0    11   11.50    0.0   65    64           64    -1
12   Big Dreamer          2    60.0    12   12.75    0.0   52    70           70    +18
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vitellius - 73 6 +67 0.0 -
2 Stepping Out 72 74 73 +1 0.0 -
3 Gimme A Diamond Line 72 54 72 -18 0.0
4 American Biscuit - 65 63 +2 4.0 -
5 Kanimambo - 59 70 -11 0.0 -
6 Miss Christmas - 64 56 +8 4.0 -
7 Lord Nelson - 55 62 -7 4.0 -
8 Marquez - 69 62 +7 4.0 -
9 Labrausco 58 70 62 +8 0.0 -
10 A Place In The Sun - 74 64 +10 0.0 -
11 World Heritage 65 55 64 -9 0.0 -
12 Big Dreamer 52 52 70 -18 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