Official NHA Assessment

Race 7: JUBILEE STAKES (Grade 3) (Open)

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Line Horse
Son Of Raj
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
10 / 13
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    Meridius             2    56.0    1    0.00     0.0   110   107          107   -3
2    Atticus Finch        5    56.0    2    0.70     0.0   110   112          112   +2
3    Son Of Raj           5    60.0    3    1.00     0.0   119   119          119   +0
4    Perfect Witness      3    51.5    4    1.75     2.0   105   97           97    -8
5    Pomodoro's Jet       6    52.0    5    2.25     0.0   93    102          102   +9
6    Indian Ocean         3    50.0    6    3.00     2.0   95    93           93    -2
7    Purple Pitcher       4    58.0    7    4.75     1.0   120   109          110   -10
8    Pyromaniac           6    52.0    8    7.50     0.0   100   99           99    -1
9    None Other           5    53.5    9    7.55     0.0   110   102          102   -8
10   Street Art           3    56.0    10   7.60     2.0   109   103          103   -6
11   Eye Of The Prophet   2    58.0    11   13.00    0.0   112   111          111   -1
12   Mujbar (GB)          6    54.5    12   99.99    0.0   103   104          104   +1
99   Juliet Tango         6    50.0    99   0.00     0.0   -     95           95    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Meridius 110 115 107 +8 0.0 -
2 Atticus Finch 110 127 112 +15 0.0 -
3 Son Of Raj Line 119 116 119 -3 0.0
4 Perfect Witness 105 105 97 +8 2.0 -
5 Pomodoro's Jet 93 118 102 +16 0.0 -
6 Indian Ocean 95 107 93 +14 2.0 -
7 Purple Pitcher 120 121 110 +11 1.0 -
8 Pyromaniac 100 71 99 -28 0.0 -
9 None Other 110 115 102 +13 0.0 -
10 Street Art 109 78 103 -25 2.0 -
11 Eye Of The Prophet 112 108 111 -3 0.0 -
12 Mujbar (GB) 103 103 104 -1 0.0 -
99 Juliet Tango - 81 95 -14 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