Official NHA Assessment

Race 6: OPEN A TABGOLD ACCOUNT - 031 314 1874 D STAKES (For All Horses with a nett rating of 69 & below)

Back to Race
Line Horse
Shiny Bob
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
3 / 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    Numzaan              2    64.0    1    0.00     0.0   69    68           68    -1
2    Shiny Bob            4    60.0    2    3.20     0.5   61    61           61    +0
3    Wave Warrior         3    60.0    3    4.00     1.5   68    58           58    -10
4    Gripen               4    59.0    4    4.05     0.5   60    58           58    -2
5    Dawn Surprise        4    59.0    5    5.25     0.5   64    57           57    -7
6    Viva De Janeiro      5    60.0    6    5.30     0.0   60    60           60    +0
7    Yannakis             2    61.5    7    5.60     0.0   64    63           63    -1
8    Angel Of My Heart    3    59.0    8    7.10     1.5   62    55           55    -7
9    Forest Jump          8    61.5    9    7.70     0.0   63    63           63    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Numzaan 69 79 68 +11 0.0 -
2 Shiny Bob Line 61 60 61 -1 0.5
3 Wave Warrior 68 68 58 +10 1.5 -
4 Gripen 60 58 58 ✓ Match 0.5 -
5 Dawn Surprise 64 79 57 +22 0.5 -
6 Viva De Janeiro 60 50 60 -10 0.0 -
7 Yannakis 64 67 63 +4 0.0 -
8 Angel Of My Heart 62 51 55 -4 1.5 -
9 Forest Jump 63 62 63 -1 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