Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING TUESDAY 23 JULY MR 73 HANDICAP (Open)

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Line Horse
Putins Promise
Reference for assessment
Exact Matches
3 / 18
Calculated = Official
Close Matches
8 / 18
Within 2 points
Significant Diffs
8 / 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    Grand Crescendo      3    59.0    1    0.00     0.5   89    70           89    +0
2    Archimides           3    56.5    2    3.25     0.5   66    67           67    +1
3    Putins Promise       5    60.0    3    5.50     0.0   73    73           73    +0
4    Boom Boom            4    57.5    4    6.75     0.5   70    67           67    -3
5    Prince Of Kildare    4    57.0    5    7.25     0.5   69    66           66    -3
6    Fast Duty            3    58.0    6    8.00     0.5   69    68           68    -1
7    Call Me Master       8    56.5    7    8.90     0.0   66    66           66    +0
8    Thymetoshine         5    52.5    8    9.00     0.0   58    58           58    +0
9    Bob Lee Swagger      4    53.5    9    11.25    0.5   67    59           59    -8
10   Lava Fire            3    53.5    10   13.25    0.5   78    59           68    -10
11   Jet Cat              9    54.0    11   16.00    0.0   61    61           61    +0
12   Sneak Preview        3    59.0    12   16.50    0.5   73    70           70    -3
13   Sail The Sky         4    57.5    13   18.00    0.5   70    67           67    -3
14   Billy Spellbound     2    60.0    14   18.50    0.0   73    73           73    +0
15   His Master's Voice   2    58.0    15   19.25    0.0   69    69           69    +0
16   Parker Getrix        4    56.0    16   99.99    0.5   65    64           64    -1
99   Walled Garden        4    58.0    99   0.00     0.5   -     68           68    +0
99   Written In Stone     9    52.0    99   0.00     0.0   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Grand Crescendo 89 107 89 +18 0.5 -
2 Archimides 66 70 67 +3 0.5 -
3 Putins Promise Line 73 73 73 ✓ Match 0.0
4 Boom Boom 70 81 67 +14 0.5 -
5 Prince Of Kildare 69 80 66 +14 0.5 -
6 Fast Duty 69 67 68 -1 0.5 -
7 Call Me Master 66 65 66 -1 0.0 -
8 Thymetoshine 58 51 58 -7 0.0 -
9 Bob Lee Swagger 67 53 59 -6 0.5 -
10 Lava Fire 78 69 68 +1 0.5 -
11 Jet Cat 61 60 61 -1 0.0 -
12 Sneak Preview 73 63 70 -7 0.5 -
13 Sail The Sky 70 62 67 -5 0.5 -
14 Billy Spellbound 73 73 73 ✓ Match 0.0 -
15 His Master's Voice 69 69 69 ✓ Match 0.0 -
16 Parker Getrix 65 56 64 -8 0.5 -
99 Walled Garden - 66 68 -2 0.5 -
99 Written In Stone - 67 57 +10 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