Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY OPEN MAIDEN (For Maiden R15 000 Win Bonus ROA Members)

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Line Horse
Graduation Time
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
8 / 11
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    Grey Smoke           2    60.0    1    0.00     4.0   74    80           80    +6
2    Torrone              2    54.5    2    1.25     4.0   62    69           69    +7
3    Graduation Time      4    59.5    3    1.30     7.0   73    73           73    +0
4    Midnight Advocator   3    56.5    4    1.80     6.0   59    69           69    +10
5    War Sword            4    54.5    5    3.80     7.0   59    63           63    +4
6    Charge Ahead         2    59.0    6    5.55     4.0   72    78           78    +6
7    Royal Statesman      2    54.5    7    5.80     4.0   57    69           69    +12
8    Tune Again           6    54.5    8    6.55     0.0   45    77           77    +32
9    Lava Fields          3    54.0    9    8.05     6.0   52    64           64    +12
10   What Now My Gal      2    54.5    10   8.80     4.0   60    69           69    +9
11   Flaming Drum         3    54.0    11   9.05     6.0   53    64           64    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Grey Smoke 74 77 80 -3 4.0 -
2 Torrone 62 63 69 -6 4.0 -
3 Graduation Time Line 73 70 73 -3 7.0
4 Midnight Advocator 59 48 69 -21 6.0 -
5 War Sword 59 58 63 -5 7.0 -
6 Charge Ahead 72 57 78 -21 4.0 -
7 Royal Statesman 57 54 69 -15 4.0 -
8 Tune Again 45 50 77 -27 0.0 -
9 Lava Fields 52 42 64 -22 6.0 -
10 What Now My Gal 60 47 69 -22 4.0 -
11 Flaming Drum 53 50 64 -14 6.0 -
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