Official NHA Assessment

Race 8: CALL TELEBET TRACK & BALL FIXED ODDS ON 031 314 1155 FM 68 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Siege Of Orleans
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
7 / 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    Isla Morada          6    54.5    1    0.00     0.0   57    70           57    +0
2    Siege Of Orleans     3    57.5    2    2.20     4.5   72    72           72    +0
3    Golden Grove         3    53.5    3    2.25     4.5   67    64           64    -3
4    Grue Of Ice          6    57.5    4    3.55     0.0   72    79           79    +7
5    Kavian's Cara        4    55.5    5    3.80     2.0   62    70           70    +8
6    Blazing Astute       3    59.5    6    4.20     4.5   76    73           73    -3
7    Symmetry             3    56.0    7    5.40     4.5   69    64           64    -5
8    Name Of The Game     3    59.0    8    5.50     4.5   75    70           70    -5
9    Miss Gibson          3    55.5    9    7.40     4.5   68    63           63    -5
10   Chelsea Flower       6    59.0    10   7.80     0.0   75    79           79    +4
11   Angel Of Justice     3    58.0    11   9.40     4.5   78    68           68    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Isla Morada 57 59 57 +2 0.0 -
2 Siege Of Orleans Line 72 52 72 -20 4.5
3 Golden Grove 67 65 64 +1 4.5 -
4 Grue Of Ice 72 53 79 -26 0.0 -
5 Kavian's Cara 62 56 70 -14 2.0 -
6 Blazing Astute 76 74 73 +1 4.5 -
7 Symmetry 69 57 64 -7 4.5 -
8 Name Of The Game 75 53 70 -17 4.5 -
9 Miss Gibson 68 56 63 -7 4.5 -
10 Chelsea Flower 75 77 79 -2 0.0 -
11 Angel Of Justice 78 57 68 -11 4.5 -
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