Official NHA Assessment

Race 7: TAB 4RACING APP PINNACLE STAKES (Open to all horses)

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Line Horse
Mhlabeni
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
3 / 10
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    Champonelle          4    55.0    1    0.00     0.5   84    92           90    +6
2    Eyjafjallajokull     2    56.5    2    0.50     0.0   88    101          101   +13
3    Mercantour           5    62.0    3    1.50     0.0   111   110          110   -1
4    Mhlabeni             7    52.5    4    2.75     0.0   90    90           90    +0
5    Silver Falcon        6    62.0    5    3.00     0.0   106   109          109   +3
5    Golden Link          3    59.5    5    3.00     0.5   101   103          103   +2
7    Usa's Hope           2    59.5    7    4.25     0.0   99    103          103   +4
8    King's Ransom        4    54.0    8    4.30     0.5   87    90           90    +3
9    Bush Tracker         6    61.0    9    9.80     0.0   102   105          105   +3
10   Slings And Arrows    3    58.0    10   37.55    0.5   92    98           98    +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Champonelle 84 87 90 -3 0.5 -
2 Eyjafjallajokull 88 86 101 -15 0.0 -
3 Mercantour 111 113 110 +3 0.0 -
4 Mhlabeni Line 90 90 90 ✓ Match 0.0
5 Silver Falcon 106 106 109 -3 0.0 -
5 Golden Link 101 99 103 -4 0.5 -
7 Usa's Hope 99 97 103 -6 0.0 -
8 King's Ransom 87 89 90 -1 0.5 -
9 Bush Tracker 102 100 105 -5 0.0 -
10 Slings And Arrows 92 92 98 -6 0.5 -
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