Official NHA Assessment

Race 5: TABGOLD SCORE6 AND SCORE10 MR 76 HANDICAP (Open)

Back to Race
Line Horse
Chara Sands
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Intrepid             3    58.0    1    0.00     2.5   72    75           72    +0
2    Trafalgar Square     6    59.5    2    0.80     0.0   75    83           83    +8
3    Chara Sands          3    59.5    3    2.20     2.5   78    78           78    +0
4    Plettenberg          3    53.5    4    2.25     2.5   74    66           66    -8
5    Griffin Park         4    60.5    5    4.25     0.0   80    85           85    +5
6    Shot Of Courage      3    58.5    6    6.25     2.5   73    76           76    +3
7    Lightning Jimmy      4    58.0    7    6.95     0.0   75    80           80    +5
8    Herecomestherain     4    52.5    8    7.45     0.0   61    69           69    +8
99   Plinian              2    59.0    99   0.00     1.5   -     79           79    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Intrepid 72 73 72 +1 2.5 -
2 Trafalgar Square 75 69 83 -14 0.0 -
3 Chara Sands Line 78 70 78 -8 2.5
4 Plettenberg 74 59 66 -7 2.5 -
5 Griffin Park 80 58 85 -27 0.0 -
6 Shot Of Courage 73 73 76 -3 2.5 -
7 Lightning Jimmy 75 48 80 -32 0.0 -
8 Herecomestherain 61 55 69 -14 0.0 -
99 Plinian - 75 79 -4 1.5 -
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