Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING TUESDAY 17 MAY CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Duke Of Rain
Reference for assessment
Exact Matches
0 / 18
Calculated = Official
Close Matches
1 / 18
Within 2 points
Significant Diffs
12 / 18
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    Duke Of Rain         3    60.0    1    0.00     2.0   75    75           75    +0
2    Devilish Dancer      4    56.0    2    0.05     0.5   66    70           70    +4
3    Global Approach      4    54.0    3    0.15     0.5   58    66           66    +8
4    Bella Rosa           5    54.5    4    0.90     0.0   64    72           72    +8
5    Just A Memory        3    60.0    5    1.00     2.0   74    79           79    +5
6    Dark Travel          4    56.0    6    1.10     0.5   67    74           74    +7
7    Wondering Star       3    58.0    7    1.60     2.0   68    74           74    +6
8    Grand Escape         4    54.0    8    3.00     0.5   54    68           68    +14
9    Anatura              5    56.5    9    3.40     0.0   69    73           73    +4
10   Pewter Sky           3    60.0    10   5.25     2.0   72    75           75    +3
11   Gypsy Magic          4    48.0    11   6.25     0.5   50    54           54    +4
12   Mike The Pilot       3    56.0    12   7.50     2.0   66    67           67    +1
13   Saffron Rain         3    52.5    13   9.50     2.0   59    60           60    +1
14   Consol Queen         5    54.0    14   11.25    0.0   61    67           67    +6
15   Perfectly Putt       5    54.0    15   14.25    0.0   56    67           67    +11
16   Da Capo              3    58.0    16   22.00    2.0   69    71           71    +2
99   My Kingdom           6    54.0    99   0.00     0.0   -     67           67    +0
99   Last Song            4    58.0    99   0.00     0.5   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Duke Of Rain Line 75 70 75 -5 2.0
2 Devilish Dancer 66 50 70 -20 0.5 -
3 Global Approach 58 56 66 -10 0.5 -
4 Bella Rosa 64 58 72 -14 0.0 -
5 Just A Memory 74 67 79 -12 2.0 -
6 Dark Travel 67 72 74 -2 0.5 -
7 Wondering Star 68 67 74 -7 2.0 -
8 Grand Escape 54 56 68 -12 0.5 -
9 Anatura 69 68 73 -5 0.0 -
10 Pewter Sky 72 71 75 -4 2.0 -
11 Gypsy Magic 50 48 54 -6 0.5 -
12 Mike The Pilot 66 50 67 -17 2.0 -
13 Saffron Rain 59 56 60 -4 2.0 -
14 Consol Queen 61 52 67 -15 0.0 -
15 Perfectly Putt 56 51 67 -16 0.0 -
16 Da Capo 69 50 71 -21 2.0 -
99 My Kingdom - 53 67 -14 0.0 -
99 Last Song - 70 74 -4 0.5 -
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