Official NHA Assessment

Race 1: TRAILBLAZERS OPEN MAIDEN (For all Maidens)

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Line Horse
Saudi Sweep
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 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    Whatastar            2    56.0    1    0.00     3.0   68    65           65    -3
2    Winding Power        2    57.0    2    2.40     3.0   70    67           67    -3
3    Saudi Sweep          3    59.0    3    3.30     4.5   68    68           68    +0
4    Higher Love          2    61.5    4    3.80     3.0   68    76           76    +8
5    Sol E Sombra         3    49.5    5    8.00     4.5   58    49           49    -9
6    Thirteen Fourteen    2    54.5    6    8.20     3.0   63    62           62    -1
7    Nathan Detroit       3    60.5    7    16.80    4.5   -     71           71    +71
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Whatastar 68 75 65 +10 3.0 -
2 Winding Power 70 72 67 +5 3.0 -
3 Saudi Sweep Line 68 68 68 ✓ Match 4.5
4 Higher Love 68 68 76 -8 3.0 -
5 Sol E Sombra 58 58 49 +9 4.5 -
6 Thirteen Fourteen 63 60 62 -2 3.0 -
7 Nathan Detroit - - 71 -71 4.5 -
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