Official NHA Assessment

Race 1: BETWAY WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Remains Of The Day
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    Johnny Appleseed     2    58.0    1    0.00     6.5   -     70           6     +6
2    Tiger Storm          3    58.0    2    1.25     9.5   -     64           64    +64
3    Remains Of The Day   3    60.0    3    8.50     9.5   68    68           68    +0
4    Black Hole Sun       4    57.5    4    11.50    11.0  59    60           60    +1
5    Pursuit Of Fame      2    58.0    5    13.00    6.5   76    70           70    -6
6    Summer Shade         4    60.0    6    15.75    11.0  63    65           65    +2
7    The Real Deal        4    60.5    7    16.00    11.0  55    66           66    +11
8    Silver Seven         3    60.0    8    19.75    9.5   38    68           68    +30
99   Lake Kivu            3    60.0    99   0.00     9.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Johnny Appleseed - 90 6 +84 6.5 -
2 Tiger Storm - 69 64 +5 9.5 -
3 Remains Of The Day Line 68 60 68 -8 9.5
4 Black Hole Sun 59 53 60 -7 11.0 -
5 Pursuit Of Fame 76 71 70 +1 6.5 -
6 Summer Shade 63 52 65 -13 11.0 -
7 The Real Deal 55 50 66 -16 11.0 -
8 Silver Seven 38 38 68 -30 9.5 -
99 Lake Kivu - 30 68 -38 9.5 -
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