Official NHA Assessment

Race 6: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 74 HANDICAP (Open)

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Line Horse
Guardia Regine
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
3 / 7
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    Sail The Sky         4    53.0    1    0.00     6.0   61    64           61    +0
2    Spring Tradition     3    58.5    2    1.25     8.5   88    74           78    -10
3    Guardia Regine       3    58.0    3    2.75     8.5   71    71           71    +0
4    Circus Lights        5    57.0    4    8.25     0.0   68    84           84    +16
5    Mescal               2    55.0    5    99.99    0.0   64    80           80    +16
99   Chestnut Bomber      3    60.5    99   0.00     8.5   -     74           74    +0
99   Corrupt              2    56.5    99   0.00     0.0   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sail The Sky 61 62 61 +1 6.0 -
2 Spring Tradition 88 81 78 +3 8.5 -
3 Guardia Regine Line 71 67 71 -4 8.5
4 Circus Lights 68 64 84 -20 0.0 -
5 Mescal 64 64 80 -16 0.0 -
99 Chestnut Bomber - 90 74 +16 8.5 -
99 Corrupt - 82 83 -1 0.0 -
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