Official NHA Assessment

Race 4: www.tabgold.co.za MR 90 HANDICAP (Open)

Back to Race
Line Horse
Donquerari
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
4 / 9
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Shampompo Shampizi   7    60.0    1    0.00     0.0   90    90           90    +0
2    Plaza Accord         2    53.0    2    0.20     2.5   81    71           71    -10
3    Donquerari           5    60.0    3    2.40     0.0   90    90           90    +0
4    Diani                5    60.5    4    3.40     0.0   91    91           91    +0
5    Down By The River    2    53.0    5    4.20     2.5   80    71           71    -9
6    William Rufus        2    60.0    6    4.90     2.5   90    85           85    -5
7    Ultra Quick          6    52.5    7    4.95     0.0   75    75           75    +0
8    Patronage            4    53.0    8    7.15     4.0   79    68           69    -10
9    Captain Wara         2    57.5    9    60.65    2.5   90    80           80    -10
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shampompo Shampizi 90 93 90 +3 0.0 -
2 Plaza Accord 81 84 71 +13 2.5 -
3 Donquerari Line 90 86 90 -4 0.0
4 Diani 91 96 91 +5 0.0 -
5 Down By The River 80 95 71 +24 2.5 -
6 William Rufus 90 88 85 +3 2.5 -
7 Ultra Quick 75 71 75 -4 0.0 -
8 Patronage 79 76 69 +7 4.0 -
9 Captain Wara 90 90 80 +10 2.5 -
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