Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Flight Engineer
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
6 / 10
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    Royal Force          3    60.0    1    0.00     5.0   -     77           6     +6
2    Legendary            2    60.0    2    6.50     3.5   79    80           80    +1
3    Flight Engineer      3    60.0    3    6.70     5.0   77    77           77    +0
4    Paul Revere          3    58.5    4    7.50     5.0   76    74           74    -2
5    Spy Story            3    60.0    5    8.25     5.0   73    77           77    +4
6    Kwagga Blitz         2    60.0    6    8.50     3.5   79    80           80    +1
7    Copper Cliff         2    60.0    7    14.00    3.5   -     80           80    +80
8    Brigham              3    60.0    8    16.50    5.0   -     77           77    +77
9    Futurenaire          3    60.0    9    16.70    5.0   -     77           77    +77
99   Sommersilber         4    60.0    99   0.00     6.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Royal Force - 104 6 +98 5.0 -
2 Legendary 79 69 80 -11 3.5 -
3 Flight Engineer Line 77 58 77 -19 5.0
4 Paul Revere 76 92 74 +18 5.0 -
5 Spy Story 73 66 77 -11 5.0 -
6 Kwagga Blitz 79 79 80 -1 3.5 -
7 Copper Cliff - 75 80 -5 3.5 -
8 Brigham - 74 77 -3 5.0 -
9 Futurenaire - 72 77 -5 5.0 -
99 Sommersilber - 56 75 -19 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