Official NHA Assessment

Race 3: NIGHT RACING 15 NOVEMBER BOOK A TABLE CALL 011 681 1796 MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Vibe Sa
Reference for assessment
Exact Matches
1 / 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    Drivelikeamaster     3    59.0    1    0.00     7.5   -     71           6     +6
2    Vibe Sa              2    60.0    2    0.30     5.0   78    78           78    +0
3    Seventh Fleet        3    56.5    3    0.50     7.5   -     66           66    +66
4    Casus Belli          3    59.0    4    2.25     7.5   -     71           71    +71
5    Mystic Vision        3    59.0    5    3.75     7.5   -     71           71    +71
6    Lloyd Wright         3    59.0    6    7.00     7.5   -     71           71    +71
7    Ragamuffin           2    60.0    7    9.40     5.0   52    78           78    +26
8    King Beijing         5    60.0    8    11.00    0.0   -     88           88    +88
99   Letona               3    59.0    99   0.00     7.5   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Drivelikeamaster - 81 6 +75 7.5 -
2 Vibe Sa Line 78 92 78 +14 5.0
3 Seventh Fleet - 66 66 ✓ Match 7.5 -
4 Casus Belli - 64 71 -7 7.5 -
5 Mystic Vision - 66 71 -5 7.5 -
6 Lloyd Wright - 80 71 +9 7.5 -
7 Ragamuffin 52 45 78 -33 5.0 -
8 King Beijing - 37 88 -51 0.0 -
99 Letona - 57 71 -14 7.5 -
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