Official NHA Assessment

Race 8: NEXT TURFFONTEIN RACEMEETING TUESDAY 20 DECEMBER MR 96 HANDICAP (Open)

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Line Horse
Goliath Heron
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Vegas Hi Rise        6    56.5    1    0.00     0.0   89    89           89    +0
2    Goliath Heron        6    56.5    2    1.25     0.0   89    89           89    +0
3    Boisterous           2    53.0    3    2.50     4.0   90    74           80    -10
4    Sudden Star          5    59.5    4    4.00     0.0   95    95           95    +0
5    Alabama Anna         6    53.5    5    8.25     0.0   91    83           83    -8
6    May Queen            5    56.5    6    11.75    0.0   89    89           89    +0
7    Ridgerunner          2    54.5    7    16.00    4.0   93    77           83    -10
99   Gallic Chief         3    62.0    99   0.00     6.0   -     88           88    +0
99   Mercantour           5    60.0    99   0.00     0.0   -     96           96    +0
99   Samuel Salt          3    59.0    99   0.00     6.0   -     82           82    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vegas Hi Rise 89 71 89 -18 0.0 -
2 Goliath Heron Line 89 86 89 -3 0.0
3 Boisterous 90 87 80 +7 4.0 -
4 Sudden Star 95 86 95 -9 0.0 -
5 Alabama Anna 91 73 83 -10 0.0 -
6 May Queen 89 90 89 +1 0.0 -
7 Ridgerunner 93 90 83 +7 4.0 -
99 Gallic Chief - 98 88 +10 6.0 -
99 Mercantour - 113 96 +17 0.0 -
99 Samuel Salt - 82 82 ✓ Match 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