Official NHA Assessment

Race 8: ENGEN OIL CENTRE PE CONDITIONS PLATE (F & M) (For Fillies and Mares)

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Line Horse
Montelena
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
3 / 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    Enchanting Choice    4    54.0    1    0.00     0.5   86    88           88    +2
2    Wild Applause        3    50.0    2    1.25     0.5   75    84           84    +9
3    Montelena            4    56.0    3    2.00     0.5   95    95           95    +0
4    Rose Of Bayeux       3    60.5    4    4.75     0.5   79    101          101   +22
5    Catch Your Breath    4    58.0    5    6.00     0.5   94    96           96    +2
6    Basingstoke          2    46.5    6    6.25     0.0   84    74           74    -10
7    Heart Peaks          4    54.0    7    7.50     0.5   90    88           88    -2
8    Concerto             4    54.0    8    10.25    0.5   75    88           88    +13
9    Woman Of Power       4    53.5    9    10.75    0.5   93    87           87    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Enchanting Choice 86 99 88 +11 0.5 -
2 Wild Applause 75 86 84 +2 0.5 -
3 Montelena Line 95 90 95 -5 0.5
4 Rose Of Bayeux 79 77 101 -24 0.5 -
5 Catch Your Breath 94 94 96 -2 0.5 -
6 Basingstoke 84 72 74 -2 0.0 -
7 Heart Peaks 90 89 88 +1 0.5 -
8 Concerto 75 73 88 -15 0.5 -
9 Woman Of Power 93 92 87 +5 0.5 -
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