Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Full Go
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
1 / 14
Within 2 points
Significant Diffs
10 / 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    Stroke Of Mercy      5    60.0    1    0.00     0.0   72    63           63    -9
2    Rockingthetimeaway   3    55.0    2    4.25     5.0   63    43           53    -10
3    Full Go              6    60.0    3    4.50     0.0   63    63           63    +0
4    Summer Fling         3    56.0    4    5.25     5.0   -     45           45    +45
5    Labrausco            2    56.0    5    5.50     3.5   58    48           48    -10
6    Youre My Sunshine    3    60.0    6    6.00     5.0   -     53           53    +53
7    Equestrian Affair    2    60.0    7    6.75     3.5   71    56           61    -10
8    Shiny Silva          3    57.5    8    7.00     5.0   -     48           48    +48
9    California Boy       3    60.0    9    7.75     5.0   -     53           53    +53
10   Uncle Ticky Bird     2    60.0    10   9.00     3.5   74    56           64    -10
11   Northern Tune        4    60.0    11   10.50    6.0   62    51           52    -10
12   Secret Reef          3    60.0    12   14.50    5.0   54    53           53    -1
13   Tony Soprano         2    60.0    13   23.50    3.5   54    56           56    +2
99   Pontiac              3    60.0    99   0.00     5.0   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Stroke Of Mercy 72 52 63 -11 0.0 -
2 Rockingthetimeaway 63 62 53 +9 5.0 -
3 Full Go Line 63 59 63 -4 0.0
4 Summer Fling - 50 45 +5 5.0 -
5 Labrausco 58 70 48 +22 3.5 -
6 Youre My Sunshine - 78 53 +25 5.0 -
7 Equestrian Affair 71 78 61 +17 3.5 -
8 Shiny Silva - 42 48 -6 5.0 -
9 California Boy - 53 53 ✓ Match 5.0 -
10 Uncle Ticky Bird 74 71 64 +7 3.5 -
11 Northern Tune 62 62 52 +10 6.0 -
12 Secret Reef 54 50 53 -3 5.0 -
13 Tony Soprano 54 40 56 -16 3.5 -
99 Pontiac - 79 53 +26 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