Official NHA Assessment

Race 1: HOLLYWOODBETS DURBANVILLE WELCOMES YOU MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Gravity
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
11 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Plaza Accord         2    59.0    1    0.00     0.0   -     86           6     +6
2    Gravity              4    59.0    2    1.75     3.5   82    82           82    +0
3    Twentytwentyvision   2    59.0    3    2.25     0.0   83    89           89    +6
4    King Of Spin         3    59.0    4    2.65     6.0   -     76           76    +76
5    Solomons Seal        2    59.0    5    4.65     0.0   -     86           86    +86
6    Winning Captain      3    60.0    6    5.05     6.0   66    76           76    +10
7    Givethatmanabells    4    59.0    7    7.80     3.5   73    79           79    +6
8    Mister Lincoln       3    60.0    8    13.30    6.0   64    76           76    +12
9    Portcullis           3    59.0    9    13.70    6.0   -     74           74    +74
10   Mela Strength        3    59.0    10   15.70    6.0   -     74           74    +74
11   Mr Belvedere         4    59.0    11   15.75    3.5   -     79           79    +79
99   Captain Cool         3    59.0    99   0.00     6.0   -     74           74    +0
99   Song To The Moon     3    59.0    99   0.00     6.0   -     74           74    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Plaza Accord - 84 6 +78 0.0 -
2 Gravity Line 82 63 82 -19 3.5
3 Twentytwentyvision 83 80 89 -9 0.0 -
4 King Of Spin - 91 76 +15 6.0 -
5 Solomons Seal - 90 86 +4 0.0 -
6 Winning Captain 66 54 76 -22 6.0 -
7 Givethatmanabells 73 70 79 -9 3.5 -
8 Mister Lincoln 64 57 76 -19 6.0 -
9 Portcullis - 63 74 -11 6.0 -
10 Mela Strength - 63 74 -11 6.0 -
11 Mr Belvedere - 55 79 -24 3.5 -
99 Captain Cool - 72 74 -2 6.0 -
99 Song To The Moon - 84 74 +10 6.0 -
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