Official NHA Assessment

Race 9: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
Busstopinhounslow
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
7 / 11
Within 2 points
Significant Diffs
3 / 11
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    Sunset Riot          2    50.5    1    0.00     0.0   101   99           99    -2
2    Callmegetrix         4    56.0    2    2.70     1.5   113   109          109   -4
3    Musical Score        3    56.5    3    3.00     2.5   107   108          108   +1
4    Busstopinhounslow    3    58.0    4    4.10     2.5   110   110          110   +0
5    Potberrie            2    54.0    5    5.20     0.0   105   106          106   +1
6    Almond Sea           3    60.0    6    5.60     2.5   119   113          113   -6
7    The Last Duke        2    52.0    7    5.80     0.0   102   102          102   +0
8    Miami Mountain       3    52.0    8    6.80     2.5   103   97           97    -6
9    Just Be Lekker       4    58.0    9    7.10     1.5   116   111          111   -5
10   Radicchio            5    52.0    10   8.80     0.0   100   102          102   +2
99   Greaterix            3    58.0    99   0.00     2.5   -     109          109   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sunset Riot 101 107 99 +8 0.0 -
2 Callmegetrix 113 113 109 +4 1.5 -
3 Musical Score 107 107 108 -1 2.5 -
4 Busstopinhounslow Line 110 110 110 ✓ Match 2.5
5 Potberrie 105 105 106 -1 0.0 -
6 Almond Sea 119 119 113 +6 2.5 -
7 The Last Duke 102 102 102 ✓ Match 0.0 -
8 Miami Mountain 103 103 97 +6 2.5 -
9 Just Be Lekker 116 113 111 +2 1.5 -
10 Radicchio 100 100 102 -2 0.0 -
99 Greaterix - 110 109 +1 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