Official NHA Assessment

Race 7: TAB COMPUTAFORM SPRINT (Grade 1) (For all horses at Weight for Age)

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Line Horse
Cruise Control
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
5 / 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    William Robertson    6    60.0    1    0.00     0.0   128   118          118   -10
2    Golden Sickle        4    57.5    2    0.25     4.0   121   105          111   -10
3    Winds Of Change      3    57.5    3    0.50     3.5   107   106          106   -1
4    Cruise Control       5    60.0    4    1.80     0.0   118   118          118   +0
5    Lucky Lad            4    60.0    5    1.90     4.0   125   110          115   -10
6    Melech               5    60.0    6    2.40     0.0   119   118          118   -1
7    Time Fo Orchids      5    57.5    7    2.70     0.0   107   113          113   +6
8    Pistol Pete          3    57.5    8    2.80     3.5   115   106          106   -9
9    Chocolate Soldier    3    57.5    9    4.90     3.5   115   106          106   -9
10   Taxi To The Moon     3    57.5    10   8.90     3.5   110   106          106   -4
11   No Filter            4    57.5    11   13.15    4.0   103   105          105   +2
12   Mover And Shaker     5    60.0    12   18.25    0.0   112   118          118   +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Robertson 128 124 118 +6 0.0 -
2 Golden Sickle 121 121 111 +10 4.0 -
3 Winds Of Change 107 102 106 -4 3.5 -
4 Cruise Control Line 118 117 118 -1 0.0
5 Lucky Lad 125 118 115 +3 4.0 -
6 Melech 119 118 118 ✓ Match 0.0 -
7 Time Fo Orchids 107 109 113 -4 0.0 -
8 Pistol Pete 115 118 106 +12 3.5 -
9 Chocolate Soldier 115 108 106 +2 3.5 -
10 Taxi To The Moon 110 119 106 +13 3.5 -
11 No Filter 103 100 105 -5 4.0 -
12 Mover And Shaker 112 109 118 -9 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