Official NHA Assessment

Race 11: NEXT VAAL RACEMEETING TUESDAY 29 APRIL MR 80 HANDICAP (Open)

Back to Race
Line Horse
Virgin River
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
5 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Arilena              6    57.5    1    0.00     0.0   75    75           75    +0
2    Virgin River         5    60.5    2    0.25     0.0   81    81           81    +0
3    Phantom Express      4    58.0    3    0.35     3.5   76    69           69    -7
4    Tiger Storm          3    59.5    4    0.85     3.0   83    73           73    -10
5    Nkandla Gold         4    59.0    5    1.65     3.5   78    71           71    -7
6    John Wick            2    62.0    6    2.90     2.0   84    80           80    -4
7    Lonely As A Cloud    3    56.0    7    3.20     3.0   76    66           66    -10
8    Qhawe Lami           4    62.0    8    3.25     3.5   84    77           77    -7
9    Rock Of Bismantova   3    58.5    9    3.45     3.0   85    71           75    -10
10   Kinshin Sha          4    59.5    10   3.50     3.5   79    72           72    -7
11   Lady Of Memphis      3    57.5    11   5.50     3.0   79    69           69    -10
12   Impact Investor      2    56.0    12   6.25     2.0   76    68           68    -8
13   Covert Operator      6    59.5    13   11.75    0.0   79    79           79    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arilena 75 75 75 ✓ Match 0.0 -
2 Virgin River Line 81 95 81 +14 0.0
3 Phantom Express 76 76 69 +7 3.5 -
4 Tiger Storm 83 69 73 -4 3.0 -
5 Nkandla Gold 78 63 71 -8 3.5 -
6 John Wick 84 82 80 +2 2.0 -
7 Lonely As A Cloud 76 71 66 +5 3.0 -
8 Qhawe Lami 84 80 77 +3 3.5 -
9 Rock Of Bismantova 85 80 75 +5 3.0 -
10 Kinshin Sha 79 62 72 -10 3.5 -
11 Lady Of Memphis 79 72 69 +3 3.0 -
12 Impact Investor 76 77 68 +9 2.0 -
13 Covert Operator 79 77 79 -2 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