Official NHA Assessment

Race 9: NEXT TURFFONTEIN RACEMEETING TUESDAY 6 DECEMBER MR 66 HANDICAP (Open)

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Line Horse
Dark Tide
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
6 / 11
Within 2 points
Significant Diffs
4 / 11
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    In The Ether         6    59.0    1    0.00     0.0   64    64           64    +0
2    Bridge Of Spies      6    52.0    2    0.25     0.0   48    50           50    +2
3    Dark Tide            5    53.5    3    0.75     0.0   53    53           53    +0
4    Gin And Tonic        3    60.5    4    6.00     6.0   67    55           57    -10
5    Earl of Cardigan     3    55.5    5    7.50     6.0   57    45           47    -10
6    Labrausco            2    52.5    6    9.00     4.0   54    43           44    -10
7    Guapo                3    61.5    7    12.00    6.0   69    57           59    -10
99   Musical Kiss         3    53.5    99   0.00     6.0   -     41           41    +0
99   Rio's Kiss           3    60.0    99   0.00     6.0   -     54           54    +0
99   Risky Business       3    57.5    99   0.00     6.0   -     49           49    +0
99   Irrevocable Dream    5    58.0    99   0.00     0.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 In The Ether 64 63 64 -1 0.0 -
2 Bridge Of Spies 48 48 50 -2 0.0 -
3 Dark Tide Line 53 53 53 ✓ Match 0.0
4 Gin And Tonic 67 68 57 +11 6.0 -
5 Earl of Cardigan 57 50 47 +3 6.0 -
6 Labrausco 54 70 44 +26 4.0 -
7 Guapo 69 60 59 +1 6.0 -
99 Musical Kiss - 53 41 +12 6.0 -
99 Rio's Kiss - 52 54 -2 6.0 -
99 Risky Business - 75 49 +26 6.0 -
99 Irrevocable Dream - 62 62 ✓ Match 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