Official NHA Assessment

Race 8: BETWAY BACK THE BOKS FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Duenna
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
8 / 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    My Soul Mate         4    54.0    1    0.00     5.0   84    71           84    +0
2    Let's Go Now         4    56.5    2    0.80     5.0   89    80           80    -9
3    Duenna               2    53.5    3    2.00     0.0   83    83           83    +0
4    Ariel's Jet          3    54.5    4    4.60     8.0   85    66           75    -10
5    Sea Anemone          5    61.0    5    5.50     0.0   83    95           95    +12
6    Queen Bomi           4    52.0    6    8.25     5.0   64    67           67    +3
7    Mamaquera            5    52.0    7    8.75     0.0   60    77           77    +17
8    Lidl Miss Sunshine   3    52.0    8    10.15    8.0   52    61           61    +9
9    Paschals Samore      5    52.0    9    10.75    0.0   67    77           77    +10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My Soul Mate 84 107 84 +23 5.0 -
2 Let's Go Now 89 113 80 +33 5.0 -
3 Duenna Line 83 94 83 +11 0.0
4 Ariel's Jet 85 69 75 -6 8.0 -
5 Sea Anemone 83 81 95 -14 0.0 -
6 Queen Bomi 64 58 67 -9 5.0 -
7 Mamaquera 60 60 77 -17 0.0 -
8 Lidl Miss Sunshine 52 62 61 +1 8.0 -
9 Paschals Samore 67 62 77 -15 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