Official NHA Assessment

Race 3: Call now! Or play online. www.trackandball.co.za MAIDEN HANDICAP (For Maidens with 3 or more runs)

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Line Horse
Isorender
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
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    King's Island        4    59.5    1    0.00     2.0   74    69           70    -4
2    Specmagic            3    56.5    2    1.90     4.0   68    62           62    -6
3    Isorender            2    58.0    3    4.20     0.0   71    71           71    +0
4    Russian Writer       3    53.0    4    4.80     4.0   58    52           52    -6
5    Moon Harvest         2    54.0    5    5.60     0.0   55    62           62    +7
6    Iron Monger          2    58.0    6    7.70     0.0   63    70           70    +7
7    Electric Storm       3    60.0    7    9.10     4.0   75    66           66    -9
8    Roy's Ruffian        6    52.5    8    27.00    0.0   20    59           59    +39
99   Hat Hot Hat          4    52.0    99   0.00     2.0   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 King's Island 74 72 70 +2 2.0 -
2 Specmagic 68 70 62 +8 4.0 -
3 Isorender Line 71 63 71 -8 0.0
4 Russian Writer 58 47 52 -5 4.0 -
5 Moon Harvest 55 55 62 -7 0.0 -
6 Iron Monger 63 64 70 -6 0.0 -
7 Electric Storm 75 70 66 +4 4.0 -
8 Roy's Ruffian 20 20 59 -39 0.0 -
99 Hat Hot Hat - 66 54 +12 2.0 -
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