Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (For all Maidens. R15 000 Win Bonus ROA Members)

Back to Race
Line Horse
Cheerful Charlie B
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
6 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Haarlem              3    60.0    1    0.00     4.0   63    64           64    +1
2    Asinantanga          3    60.0    2    0.05     4.0   70    64           64    -6
3    Master Incolor       3    60.0    3    7.30     4.0   70    64           64    -6
4    Cheerful Charlie B   3    60.0    4    7.40     4.0   64    64           64    +0
5    Vila Foz             3    60.0    5    9.90     4.0   43    64           64    +21
6    Lord Quinn           4    60.0    6    12.40    2.0   53    68           68    +15
7    Always Shining       3    60.0    7    18.65    4.0   75    64           65    -10
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Haarlem 63 73 64 +9 4.0 -
2 Asinantanga 70 73 64 +9 4.0 -
3 Master Incolor 70 73 64 +9 4.0 -
4 Cheerful Charlie B Line 64 61 64 -3 4.0
5 Vila Foz 43 57 64 -7 4.0 -
6 Lord Quinn 53 54 68 -14 2.0 -
7 Always Shining 75 76 65 +11 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