Official NHA Assessment

Race 3: GALLOP TV YOUTUBE CHANNEL MR 78 HANDICAP (Open)

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Line Horse
Rhythm
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
3 / 7
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    Preemptive Strike    4    58.0    1    0.00     9.0   74    66           74    +0
2    Rhythm               2    55.0    2    0.05     5.0   68    68           68    +0
3    Barry Du Grond       3    56.5    3    0.95     7.5   81    66           71    -10
4    Kalahari Roller      3    54.5    4    1.75     7.5   85    62           75    -10
5    Boom Shakalaka       2    60.5    5    3.35     5.0   89    79           79    -10
6    Griffin Park         4    59.0    6    9.85     9.0   76    68           68    -8
99   Iron Will            4    55.5    99   0.00     9.0   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Preemptive Strike 74 70 74 -4 9.0 -
2 Rhythm Line 68 67 68 -1 5.0
3 Barry Du Grond 81 67 71 -4 7.5 -
4 Kalahari Roller 85 86 75 +11 7.5 -
5 Boom Shakalaka 89 57 79 -22 5.0 -
6 Griffin Park 76 58 68 -10 9.0 -
99 Iron Will - 63 61 +2 9.0 -
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