Official NHA Assessment

Race 9: NEXT TURFFONTEIN RACEMEETING THURSDAY 18 JULY MR 66 HANDICAP (Open)

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Line Horse
Samoa
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
4 / 12
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    Della's Sword        3    53.5    1    0.00     1.5   53    50           53    +0
2    Risky Business       3    54.5    2    0.50     1.5   55    52           52    -3
3    Samoa                10   56.5    3    1.00     0.0   59    59           59    +0
4    Red Carpet Girl      3    58.0    4    2.00     1.5   62    59           59    -3
5    Kittyboys Girl       2    57.5    5    2.50     0.5   61    60           60    -1
6    After Hours          7    60.0    6    3.25     0.0   66    66           66    +0
7    Vava Vegas           5    58.0    7    3.50     0.0   62    62           62    +0
8    Dark Tide            5    54.5    8    5.75     0.0   55    55           55    +0
9    Bridge Of Spies      6    52.0    9    9.00     0.0   48    50           50    +2
10   Samthewiseman        5    52.0    10   11.50    0.0   53    50           50    -3
11   Wilkies              2    58.0    11   13.00    0.5   62    61           61    -1
12   Galla Vanting        2    58.0    12   17.00    0.5   62    61           61    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Della's Sword 53 56 53 +3 1.5 -
2 Risky Business 55 75 52 +23 1.5 -
3 Samoa Line 59 64 59 +5 0.0
4 Red Carpet Girl 62 55 59 -4 1.5 -
5 Kittyboys Girl 61 59 60 -1 0.5 -
6 After Hours 66 79 66 +13 0.0 -
7 Vava Vegas 62 58 62 -4 0.0 -
8 Dark Tide 55 53 55 -2 0.0 -
9 Bridge Of Spies 48 48 50 -2 0.0 -
10 Samthewiseman 53 52 50 +2 0.0 -
11 Wilkies 62 50 61 -11 0.5 -
12 Galla Vanting 62 54 61 -7 0.5 -
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