Official NHA Assessment

Race 7: BETWAY FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Heirloom
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
4 / 8
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    Nettleton            3    61.0    1    0.00     9.5   82    84           82    +0
2    Heirloom             4    55.0    2    2.75     11.0  69    69           69    +0
3    Inventrix            2    55.0    3    3.25     6.5   70    78           78    +8
4    Micke's Bomb         4    55.0    4    3.45     11.0  70    69           69    -1
5    Phantom Express      4    56.5    5    5.00     11.0  73    72           72    -1
6    Golden Aspen         6    60.0    6    7.00     0.0   80    101          101   +21
7    Time To The Moon     3    52.0    7    11.25    9.5   63    66           66    +3
99   Lovegrass            4    61.0    99   0.00     11.0  -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nettleton 82 100 82 +18 9.5 -
2 Heirloom Line 69 67 69 -2 11.0
3 Inventrix 70 73 78 -5 6.5 -
4 Micke's Bomb 70 60 69 -9 11.0 -
5 Phantom Express 73 76 72 +4 11.0 -
6 Golden Aspen 80 66 101 -35 0.0 -
7 Time To The Moon 63 63 66 -3 9.5 -
99 Lovegrass - 96 81 +15 11.0 -
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