Official NHA Assessment

Race 4: BETWAY BACK THE BOKS MR 75 HANDICAP (Open)

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Line Horse
Pendragon
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
7 / 11
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    Siberian Steel       3    58.5    1    0.00     9.5   77    61           77    +0
2    Pendragon            5    56.0    2    0.75     0.0   75    75           75    +0
3    Fulliautomatix       3    52.0    3    2.25     9.5   52    48           48    -4
4    Smelting             7    52.0    4    5.25     0.0   55    67           67    +12
5    Clean Living         2    50.5    5    7.00     6.5   64    51           54    -10
6    Flying Broomstick    3    53.0    6    9.75     9.5   69    50           59    -10
7    Above The World      2    52.5    7    9.85     6.5   68    55           58    -10
99   Mandalay             3    50.5    99   0.00     9.5   -     45           45    +0
99   In The Ether         6    54.5    99   0.00     0.0   -     72           72    +0
99   Tayooba              2    61.0    99   0.00     6.5   -     72           72    +0
99   Happy Analia         4    53.5    99   0.00     11.0  -     48           48    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Siberian Steel 77 80 77 +3 9.5 -
2 Pendragon Line 75 73 75 -2 0.0
3 Fulliautomatix 52 66 48 +18 9.5 -
4 Smelting 55 52 67 -15 0.0 -
5 Clean Living 64 61 54 +7 6.5 -
6 Flying Broomstick 69 52 59 -7 9.5 -
7 Above The World 68 63 58 +5 6.5 -
99 Mandalay - 53 45 +8 9.5 -
99 In The Ether - 63 72 -9 0.0 -
99 Tayooba - 68 72 -4 6.5 -
99 Happy Analia - 78 48 +30 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