Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING THURSDAY 13 JANUARY MR 80 HANDICAP (Open)

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Line Horse
Jet Cat
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
3 / 14
Within 2 points
Significant Diffs
9 / 14
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    Goliath Heron        6    58.5    1    0.00     0.0   77    77           77    +0
2    Grindelwald          6    49.5    2    1.00     0.0   55    59           59    +4
3    Jet Cat              9    59.0    3    1.75     0.0   78    78           78    +0
4    Frontline Fighter    3    56.0    4    2.25     5.0   79    62           69    -10
5    Irfaans Boy          3    57.5    5    2.65     5.0   90    65           80    -10
6    Vegas Hi Rise        6    56.5    6    3.05     0.0   80    73           73    -7
7    Phinda Mzala         4    60.0    7    3.10     6.0   80    68           70    -10
8    Raisetheredlantern   4    54.5    8    3.50     6.0   69    57           59    -10
9    Country Squire       6    60.0    9    3.75     0.0   80    80           80    +0
10   Eyes On Tiger        4    55.5    10   4.75     6.0   71    59           61    -10
11   Alex The Great       7    57.0    11   5.00     0.0   74    74           74    +0
12   Shinnecock           5    58.5    12   5.50     0.0   77    77           77    +0
13   Excellarator         3    54.5    13   5.90     5.0   76    59           66    -10
14   The Hound            3    54.0    14   6.90     5.0   75    58           65    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Goliath Heron 77 86 77 +9 0.0 -
2 Grindelwald 55 70 59 +11 0.0 -
3 Jet Cat Line 78 60 78 -18 0.0
4 Frontline Fighter 79 82 69 +13 5.0 -
5 Irfaans Boy 90 90 80 +10 5.0 -
6 Vegas Hi Rise 80 71 73 -2 0.0 -
7 Phinda Mzala 80 54 70 -16 6.0 -
8 Raisetheredlantern 69 64 59 +5 6.0 -
9 Country Squire 80 79 80 -1 0.0 -
10 Eyes On Tiger 71 69 61 +8 6.0 -
11 Alex The Great 74 63 74 -11 0.0 -
12 Shinnecock 77 74 77 -3 0.0 -
13 Excellarator 76 60 66 -6 5.0 -
14 The Hound 75 67 65 +2 5.0 -
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