Official NHA Assessment

Race 7: MICHAEL ROBERTS STAKES (For All Horses. Non-Black Type)

Back to Race
Line Horse
French Trip
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Down By The River    2    53.5    1    0.00     0.0   89    93           93    +4
2    Queue Wing           7    52.0    2    2.70     0.0   83    92           92    +9
3    French Trip          4    52.0    3    3.50     3.0   85    85           85    +0
4    Cape Eagle           7    62.5    4    4.10     0.0   109   112          112   +3
5    Imilenzeyokududuma   6    62.5    5    4.25     0.0   112   112          112   +0
6    Capsaicin            4    55.0    6    6.65     3.0   90    90           90    +0
7    Trois Trois Quatre   5    55.0    7    7.85     0.0   92    96           96    +4
8    Winter Games         4    59.5    8    10.05    3.0   100   99           99    -1
9    Narina Trogon        5    62.5    9    10.25    0.0   105   111          111   +6
10   Johnny The Thief     2    56.5    10   13.35    0.0   95    99           99    +4
11   Royal Victory        5    62.5    11   99.99    0.0   124   111          114   -10
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Down By The River 89 95 93 +2 0.0 -
2 Queue Wing 83 81 92 -11 0.0 -
3 French Trip Line 85 88 85 +3 3.0
4 Cape Eagle 109 106 112 -6 0.0 -
5 Imilenzeyokududuma 112 109 112 -3 0.0 -
6 Capsaicin 90 88 90 -2 3.0 -
7 Trois Trois Quatre 92 87 96 -9 0.0 -
8 Winter Games 100 103 99 +4 3.0 -
9 Narina Trogon 105 102 111 -9 0.0 -
10 Johnny The Thief 95 95 99 -4 0.0 -
11 Royal Victory 124 124 114 +10 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