Official NHA Assessment

Race 6: NEWBURY RACECOURSE CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 82)

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Line Horse
De Vlugge
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 10
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    Fine Wine            4    52.5    1    0.00     2.5   67    63           63    -4
2    Treasure Island      2    53.5    2    1.10     0.0   79    74           74    -5
3    De Vlugge            2    55.5    3    2.80     0.0   76    76           76    +0
4    Overnight            3    54.5    4    3.30     5.0   81    63           71    -10
5    Jeanne Darc          3    61.5    5    3.35     5.0   85    77           77    -8
6    Golden Angel         3    56.0    6    3.95     5.0   74    66           66    -8
7    Jazz Cafe            3    58.5    7    4.35     5.0   84    70           74    -10
8    Ethereal View        3    54.0    8    6.05     5.0   70    61           61    -9
9    Saint Brigid         3    54.5    9    6.10     5.0   71    62           62    -9
9    Radu                 5    49.0    9    6.10     0.0   68    61           61    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fine Wine 67 73 63 +10 2.5 -
2 Treasure Island 79 78 74 +4 0.0 -
3 De Vlugge Line 76 85 76 +9 0.0
4 Overnight 81 79 71 +8 5.0 -
5 Jeanne Darc 85 83 77 +6 5.0 -
6 Golden Angel 74 72 66 +6 5.0 -
7 Jazz Cafe 84 82 74 +8 5.0 -
8 Ethereal View 70 68 61 +7 5.0 -
9 Saint Brigid 71 80 62 +18 5.0 -
9 Radu 68 64 61 +3 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