Official NHA Assessment

Race 9: NEXT VAAL RACEMEETING THURSDAY 1 AUGUST CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
Micke's Bomb
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
4 / 11
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    Rock Of Bismantova   3    60.0    1    0.00     0.5   76    75           75    -1
2    Micke's Bomb         4    56.5    2    0.75     0.5   72    72           72    +0
3    After Hours          7    56.0    3    1.00     0.0   65    72           72    +7
4    Cerulean Dancer      2    54.5    4    2.25     0.0   67    68           68    +1
5    Written In Stone     9    52.0    5    2.75     0.0   54    62           62    +8
6    Dancing Dora         6    52.5    6    3.75     0.0   60    62           62    +2
7    Sneak Preview        3    54.5    7    4.75     0.5   69    64           64    -5
8    Lava Fire            3    52.0    8    11.75    0.5   76    59           66    -10
9    Nazare               3    58.5    9    21.75    0.5   71    72           72    +1
99   Red Carpet Girl      3    52.5    99   0.00     0.5   -     60           60    +0
99   Dark Tide            5    52.0    99   0.00     0.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rock Of Bismantova 76 80 75 +5 0.5 -
2 Micke's Bomb Line 72 60 72 -12 0.5
3 After Hours 65 79 72 +7 0.0 -
4 Cerulean Dancer 67 71 68 +3 0.0 -
5 Written In Stone 54 67 62 +5 0.0 -
6 Dancing Dora 60 53 62 -9 0.0 -
7 Sneak Preview 69 63 64 -1 0.5 -
8 Lava Fire 76 69 66 +3 0.5 -
9 Nazare 71 70 72 -2 0.5 -
99 Red Carpet Girl - 55 60 -5 0.5 -
99 Dark Tide - 53 60 -7 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