Official NHA Assessment

Race 2: BREEDERS GUINEAS PLATE (Fillies) (For 3 year-old Fillies)

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Line Horse
Drive By
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 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    Sweet The Sound      3    58.0    1    0.00     4.0   80    66           66    -14
2    Europeana            3    58.0    2    2.25     4.0   73    69           69    -4
3    Oh So Squishy        3    58.0    3    2.75     4.0   81    68           71    -10
4    Zambaq               3    60.0    4    3.25     4.0   91    72           81    -10
5    Drive By             6    60.0    5    4.75     0.0   78    78           78    +0
6    Voltron              3    54.0    6    10.00    4.0   69    58           59    -10
7    Twice To Heaven      3    60.0    7    12.25    4.0   83    70           73    -10
8    Lollapalooza         3    60.0    8    15.25    4.0   91    70           81    -10
9    Miss Nibbles         3    60.0    9    22.75    4.0   88    70           78    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sweet The Sound 80 60 66 -6 4.0 -
2 Europeana 73 92 69 +23 4.0 -
3 Oh So Squishy 81 68 71 -3 4.0 -
4 Zambaq 91 81 81 ✓ Match 4.0 -
5 Drive By Line 78 68 78 -10 0.0
6 Voltron 69 63 59 +4 4.0 -
7 Twice To Heaven 83 72 73 -1 4.0 -
8 Lollapalooza 91 74 81 -7 4.0 -
9 Miss Nibbles 88 95 78 +17 4.0 -
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