Official NHA Assessment

Race 1: CATCH KZN RACING VIA LIVE STREAMING ON www.galloptv.co.za QUALIFIED MAIDEN PLATE (Maidens with 3 runs or more & gross ra

Back to Race
Line Horse
Double Silver
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Captains Walk        3    60.0    1    0.00     8.5   57    70           63    +6
2    Saka Gold            3    60.0    2    1.05     8.5   63    70           70    +7
3    Double Silver        3    59.0    3    1.45     8.5   68    68           68    +0
4    Ultimate Jewel       5    59.0    4    5.85     0.0   62    85           85    +23
5    Sewelo               3    58.5    5    6.25     8.5   48    67           67    +19
6    Buster Keaton        3    60.0    6    7.00     8.5   66    70           70    +4
7    Don't Linngar        3    60.0    7    8.90     8.5   63    70           70    +7
8    Blitzen              2    59.0    8    11.80    5.5   27    74           74    +47
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captains Walk 57 54 63 -9 8.5 -
2 Saka Gold 63 60 70 -10 8.5 -
3 Double Silver Line 68 74 68 +6 8.5
4 Ultimate Jewel 62 80 85 -5 0.0 -
5 Sewelo 48 45 67 -22 8.5 -
6 Buster Keaton 66 60 70 -10 8.5 -
7 Don't Linngar 63 62 70 -8 8.5 -
8 Blitzen 27 57 74 -17 5.5 -
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