Official NHA Assessment

Race 1: TRACK AND BALL GAMING MR 68 HANDICAP (Open)

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Line Horse
Purple Powahouse
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
5 / 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    Knight Warrior       5    58.0    1    0.00     0.0   64    64           64    +0
2    Purple Powahouse     8    56.0    2    1.20     0.0   60    60           60    +0
3    Phaka Imali          3    58.5    3    1.50     4.5   65    56           56    -9
4    Big Slick            2    55.0    4    2.10     3.0   66    52           56    -10
5    Bally Magic          6    53.0    5    3.00     0.0   54    54           54    +0
6    Majorca Palace       4    54.0    6    3.15     5.0   56    46           46    -10
7    High Velocity        4    52.0    7    3.85     5.0   52    42           42    -10
8    Victor Rail          5    58.5    8    5.55     0.0   70    65           65    -5
9    Leslies Pathtofame   7    60.0    9    6.05     0.0   68    68           68    +0
10   Heaven's Will        3    61.0    10   9.55     4.5   76    61           66    -10
11   Zabadak              2    54.5    11   13.75    3.0   56    51           51    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Knight Warrior 64 74 64 +10 0.0 -
2 Purple Powahouse Line 60 55 60 -5 0.0
3 Phaka Imali 65 62 56 +6 4.5 -
4 Big Slick 66 64 56 +8 3.0 -
5 Bally Magic 54 60 54 +6 0.0 -
6 Majorca Palace 56 51 46 +5 5.0 -
7 High Velocity 52 50 42 +8 5.0 -
8 Victor Rail 70 61 65 -4 0.0 -
9 Leslies Pathtofame 68 63 68 -5 0.0 -
10 Heaven's Will 76 62 66 -4 4.5 -
11 Zabadak 56 52 51 +1 3.0 -
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