Official NHA Assessment

Race 7: RCS PREMIER YEARLING SALE 13 & 14 MARCH APPRENTICE D STAKES (For All Horses)

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Line Horse
Celtic Chief
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 9
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    Avignon              4    54.5    1    0.00     5.0   55    59           59    +4
2    True Horizon         4    53.0    2    2.75     5.0   57    56           56    -1
3    Celtic Chief         3    62.0    3    3.05     4.5   75    75           75    +0
4    Shifting Path        2    57.5    4    5.05     3.0   65    69           69    +4
5    Hiawatha Goldberg    2    54.5    5    5.45     3.0   58    63           63    +5
6    Lovers Lane          2    54.5    6    5.95     3.0   58    63           63    +5
7    My Bestie            7    59.0    7    6.00     0.0   64    78           78    +14
8    Ozark                4    57.5    8    6.20     5.0   61    65           65    +4
9    Im The Buzz          5    58.5    9    11.45    0.0   68    77           77    +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Avignon 55 61 59 +2 5.0 -
2 True Horizon 57 60 56 +4 5.0 -
3 Celtic Chief Line 75 75 75 ✓ Match 4.5
4 Shifting Path 65 62 69 -7 3.0 -
5 Hiawatha Goldberg 58 57 63 -6 3.0 -
6 Lovers Lane 58 58 63 -5 3.0 -
7 My Bestie 64 61 78 -17 0.0 -
8 Ozark 61 61 65 -4 5.0 -
9 Im The Buzz 68 68 77 -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