Official NHA Assessment

Race 5: NELSON MANDELA BAY RACING POLY CHALLENGE (Open - 3rd Leg (Non-Blk Type))

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Line Horse
Strathclyde
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 7
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Mercantour           5    62.0    1    0.00     0.0   111   115          115   +4
2    Bingwa               7    62.0    2    0.50     0.0   114   120          120   +6
3    Brenden James        6    61.0    3    2.75     0.0   99    115          115   +16
4    Wecangoallnight      2    59.5    4    5.00     0.0   95    110          110   +15
5    Strathclyde          3    61.0    5    6.75     8.0   97    97           97    +0
6    The Africa House     4    59.5    6    6.85     5.0   94    100          100   +6
7    Mr Fox               3    59.5    7    8.10     8.0   96    94           94    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mercantour 111 113 115 -2 0.0 -
2 Bingwa 114 107 120 -13 0.0 -
3 Brenden James 99 98 115 -17 0.0 -
4 Wecangoallnight 95 95 110 -15 0.0 -
5 Strathclyde Line 97 97 97 ✓ Match 8.0
6 The Africa House 94 93 100 -7 5.0 -
7 Mr Fox 96 99 94 +5 8.0 -
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