Official NHA Assessment

Race 3: JEAN ROI MAIDEN PLATE (For all Maidens. R15 000 Win bonus RA Members)

Back to Race
Line Horse
Heknows
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Pomodoro's Jet       6    59.0    1    0.00     0.0   77    77           70    -7
2    Zum Zum              3    59.0    2    2.00     4.0   -     72           72    +72
3    Bon Boyage           3    59.0    3    2.75     4.0   78    71           71    -7
4    Gentleman Joe        3    59.0    4    2.85     4.0   -     71           71    +71
5    Heknows              3    59.0    5    4.10     4.0   70    70           70    +0
6    Keep Shining         3    59.0    6    6.35     4.0   -     69           69    +69
7    Tchaikovsky          6    59.0    7    7.60     0.0   76    77           77    +1
8    Dog Detachment       4    60.0    8    8.00     2.5   57    74           74    +17
9    Donder Storm         3    59.0    9    10.75    4.0   66    69           69    +3
10   Icanseeclearlynow    3    59.0    10   14.75    4.0   69    69           69    +0
11   I'm In Charge        3    59.0    11   18.00    4.0   -     69           69    +69
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pomodoro's Jet 77 118 70 +48 0.0 -
2 Zum Zum - 75 72 +3 4.0 -
3 Bon Boyage 78 73 71 +2 4.0 -
4 Gentleman Joe - 83 71 +12 4.0 -
5 Heknows Line 70 71 70 +1 4.0
6 Keep Shining - 64 69 -5 4.0 -
7 Tchaikovsky 76 81 77 +4 0.0 -
8 Dog Detachment 57 60 74 -14 2.5 -
9 Donder Storm 66 63 69 -6 4.0 -
10 Icanseeclearlynow 69 52 69 -17 4.0 -
11 I'm In Charge - 40 69 -29 4.0 -
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