Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (F & M) (Maiden(F&M) R15000 Win bonus ROA Members)

Back to Race
Line Horse
Ray Flambe
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
10 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Ray Flambe           2    60.0    1    0.00     0.0   68    68           68    +0
2    Racinante            2    60.0    2    0.25     0.0   58    68           68    +10
3    Platinum Run         2    60.0    3    0.35     0.0   -     73           73    +73
3    White Witch          2    60.0    3    0.35     0.0   61    73           73    +12
5    Dream Star           2    60.0    5    2.10     0.0   64    71           71    +7
6    Antonia Augusta      2    60.0    6    2.35     0.0   57    70           70    +13
7    Minstrel Gallery     2    60.0    7    4.60     0.0   68    68           68    +0
8    Mercurial Jet        3    60.0    8    5.10     4.0   62    60           60    -2
9    Make A Deal          3    60.0    9    13.60    4.0   -     60           60    +60
10   Duchess Of Africa    6    58.5    10   21.85    0.0   -     65           65    +65
11   Sweet Ohanna         3    60.0    11   24.10    4.0   -     60           60    +60
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ray Flambe Line 68 58 68 -10 0.0
2 Racinante 58 50 68 -18 0.0 -
3 Platinum Run - 67 73 -6 0.0 -
3 White Witch 61 52 73 -21 0.0 -
5 Dream Star 64 61 71 -10 0.0 -
6 Antonia Augusta 57 57 70 -13 0.0 -
7 Minstrel Gallery 68 48 68 -20 0.0 -
8 Mercurial Jet 62 59 60 -1 4.0 -
9 Make A Deal - 40 60 -20 4.0 -
10 Duchess Of Africa - 37 65 -28 0.0 -
11 Sweet Ohanna - 52 60 -8 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