Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION MR 66 HANDICAP (Open)

Back to Race
Line Horse
Son Of Raj
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
3 / 15
Within 2 points
Significant Diffs
12 / 15
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Prime Example        2    56.5    1    0.00     0.0   71    66           71    +0
2    Monsieur Chevelle    3    60.5    2    0.05     6.0   68    62           62    -6
3    Flag Bearer          3    60.5    3    0.30     6.0   68    68           68    +0
4    Son Of Raj           5    58.5    4    1.40     0.0   75    75           75    +0
5    Understated          5    54.5    5    2.00     0.0   55    66           66    +11
6    So Long Spring       7    55.0    6    4.50     0.0   55    64           64    +9
7    Follow My Path       5    56.5    7    5.75     0.0   59    66           66    +7
8    Pacific Express      2    59.5    8    9.00     0.0   77    72           72    -5
9    Time Spirit          4    59.5    9    11.00    3.0   65    66           66    +1
10   Let There Be Light   4    60.5    10   11.20    3.0   67    68           68    +1
11   Gregor Macgregor     4    58.5    11   11.25    3.0   63    64           64    +1
12   Go Dream Machine     3    54.5    12   12.50    6.0   56    50           50    -6
13   Nuclear Force        5    59.0    13   16.50    0.0   76    71           71    -5
99   Twice In Camden      3    56.0    99   0.00     6.0   -     53           53    +0
99   Ideal Future         6    51.0    99   0.00     0.0   -     55           55    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Prime Example 71 93 71 +22 0.0 -
2 Monsieur Chevelle 68 63 62 +1 6.0 -
3 Flag Bearer 68 60 68 -8 6.0 -
4 Son Of Raj Line 75 116 75 +41 0.0
5 Understated 55 50 66 -16 0.0 -
6 So Long Spring 55 51 64 -13 0.0 -
7 Follow My Path 59 54 66 -12 0.0 -
8 Pacific Express 77 59 72 -13 0.0 -
9 Time Spirit 65 60 66 -6 3.0 -
10 Let There Be Light 67 59 68 -9 3.0 -
11 Gregor Macgregor 63 63 64 -1 3.0 -
12 Go Dream Machine 56 52 50 +2 6.0 -
13 Nuclear Force 76 61 71 -10 0.0 -
99 Twice In Camden - 46 53 -7 6.0 -
99 Ideal Future - 72 55 +17 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