Official NHA Assessment

Race 6: TRACK & BALL GAMING MR 67 HANDICAP (Open)

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Line Horse
Chara Sands
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
6 / 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    Alfonsa Spagoni      6    54.5    1    0.00     0.0   59    69           59    +0
2    Hippocrates          3    52.5    2    0.60     3.0   55    59           59    +4
3    Chara Sands          3    60.0    3    2.00     3.0   74    74           74    +0
4    Impartial            4    59.0    4    2.05     3.5   65    71           71    +6
5    Purple Operator      3    58.5    5    4.15     3.0   68    71           71    +3
6    Bless Me Fred        6    52.0    6    4.55     0.0   63    64           64    +1
7    Valiente             5    57.5    7    5.55     0.0   70    75           75    +5
8    Vunderbar            4    52.0    8    7.45     3.5   51    57           57    +6
9    Imitation Game       4    60.5    9    9.55     3.5   68    74           74    +6
10   Hampton Court        7    60.5    10   11.35    0.0   68    81           81    +13
11   Woodstock Festival   6    55.5    11   11.75    0.0   66    71           71    +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Alfonsa Spagoni 59 60 59 +1 0.0 -
2 Hippocrates 55 68 59 +9 3.0 -
3 Chara Sands Line 74 70 74 -4 3.0
4 Impartial 65 50 71 -21 3.5 -
5 Purple Operator 68 74 71 +3 3.0 -
6 Bless Me Fred 63 62 64 -2 0.0 -
7 Valiente 70 75 75 ✓ Match 0.0 -
8 Vunderbar 51 48 57 -9 3.5 -
9 Imitation Game 68 61 74 -13 3.5 -
10 Hampton Court 68 70 81 -11 0.0 -
11 Woodstock Festival 66 57 71 -14 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