Official NHA Assessment

Race 8: 4RACING YELLOWWOOD HANDICAP (Grade 3) (For Fillies and Mares)

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Line Horse
Terra Time
Reference for assessment
Exact Matches
3 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
7 / 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    Gilded Butterfly     3    52.0    1    0.00     9.0   91    91           91    +0
2    Crimson Princess     4    52.0    2    1.75     5.0   88    102          102   +14
3    Terra Time           3    53.0    3    2.25     9.0   96    96           96    +0
4    Ululate              4    54.0    4    6.00     5.0   95    103          103   +8
5    Southern Song        4    53.0    5    6.25     5.0   91    101          101   +10
6    Bold Fortune         4    57.0    6    9.25     5.0   102   109          109   +7
7    Sister Light         3    52.0    7    9.75     9.0   85    91           91    +6
8    Opera Glass          4    52.0    8    10.25    5.0   91    99           99    +8
9    Pink Tourmaline      4    60.0    9    10.75    5.0   108   115          115   +7
10   Greek Miss           3    52.0    10   11.25    9.0   90    91           91    +1
11   Clafoutis            3    55.0    11   13.75    9.0   100   97           97    -3
99   Admire Me            4    54.0    99   0.00     5.0   -     103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gilded Butterfly 91 108 91 +17 9.0 -
2 Crimson Princess 88 102 102 ✓ Match 5.0 -
3 Terra Time Line 96 96 96 ✓ Match 9.0
4 Ululate 95 80 103 -23 5.0 -
5 Southern Song 91 90 101 -11 5.0 -
6 Bold Fortune 102 83 109 -26 5.0 -
7 Sister Light 85 96 91 +5 9.0 -
8 Opera Glass 91 81 99 -18 5.0 -
9 Pink Tourmaline 108 108 115 -7 5.0 -
10 Greek Miss 90 91 91 ✓ Match 9.0 -
11 Clafoutis 100 96 97 -1 9.0 -
99 Admire Me - 85 103 -18 5.0 -
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