Official NHA Assessment

Race 5: TAB 4RACING APP MR 82 HANDICAP (Open)

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Line Horse
Zig Zag
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
4 / 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    Blonde Act           3    60.0    1    0.00     4.0   82    71           82    +0
2    King's Crusade       4    59.5    2    1.50     2.0   81    77           77    -4
3    Zig Zag              5    59.0    3    2.00     0.0   80    80           80    +0
4    Silver Tycoon        7    58.0    4    3.25     0.0   78    77           77    -1
5    Alado's Pride        7    52.5    5    4.75     0.0   66    64           64    -2
6    Storm Commander      5    56.0    6    5.00     0.0   74    71           71    -3
7    Assured              4    58.5    7    5.05     2.0   79    72           72    -7
8    Ushuaia              4    57.0    8    6.05     2.0   76    69           69    -7
9    Gold Rock            5    56.0    9    7.80     0.0   74    71           71    -3
10   Royal Shindig        4    52.0    10   8.30     2.0   65    59           59    -6
11   Dawn Of A New Era    4    56.5    11   8.55     2.0   75    68           68    -7
99   Fire Lord            3    56.5    99   0.00     4.0   -     64           64    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blonde Act 82 96 82 +14 4.0 -
2 King's Crusade 81 81 77 +4 2.0 -
3 Zig Zag Line 80 87 80 +7 0.0
4 Silver Tycoon 78 74 77 -3 0.0 -
5 Alado's Pride 66 73 64 +9 0.0 -
6 Storm Commander 74 74 71 +3 0.0 -
7 Assured 79 76 72 +4 2.0 -
8 Ushuaia 76 72 69 +3 2.0 -
9 Gold Rock 74 72 71 +1 0.0 -
10 Royal Shindig 65 62 59 +3 2.0 -
11 Dawn Of A New Era 75 78 68 +10 2.0 -
99 Fire Lord - 69 64 +5 4.0 -
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