Official NHA Assessment

Race 8: NEXT NELSON MANDELA BAY RACING RACEMEETING MONDAY 10 JANUARY MR 66 HANDICAP (Open)

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Line Horse
Doppio Oro
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
5 / 14
Within 2 points
Significant Diffs
7 / 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    Great Guy            5    53.5    1    0.00     0.0   53    52           53    +0
2    The Sands            6    55.5    2    0.25     0.0   57    56           56    -1
3    Doppio Oro           5    60.5    3    3.50     0.0   67    67           67    +0
4    Psychedelic Eric     3    53.0    4    8.50     4.0   61    43           51    -10
5    Silver Celebrity     4    50.0    5    9.00     2.5   54    40           44    -10
6    Global Design        3    54.5    6    10.25    4.0   69    46           59    -10
7    Dirty Martini        4    59.5    7    13.00    2.5   65    59           59    -6
8    Da Capo              3    59.5    8    13.05    4.0   74    56           64    -10
9    Maestro Sonador      4    57.0    9    13.15    2.5   60    54           54    -6
10   Curious              5    57.0    10   13.25    0.0   59    59           59    +0
99   Sanctity             4    57.0    99   0.00     2.5   -     54           54    +0
99   Coffee Break         3    56.0    99   0.00     4.0   -     49           49    +0
99   Winter Vacation      4    57.5    99   0.00     2.5   -     55           55    +0
99   Livingstone          4    52.0    99   0.00     2.5   -     44           44    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Great Guy 53 54 53 +1 0.0 -
2 The Sands 57 50 56 -6 0.0 -
3 Doppio Oro Line 67 59 67 -8 0.0
4 Psychedelic Eric 61 50 51 -1 4.0 -
5 Silver Celebrity 54 46 44 +2 2.5 -
6 Global Design 69 54 59 -5 4.0 -
7 Dirty Martini 65 50 59 -9 2.5 -
8 Da Capo 74 50 64 -14 4.0 -
9 Maestro Sonador 60 52 54 -2 2.5 -
10 Curious 59 50 59 -9 0.0 -
99 Sanctity - 61 54 +7 2.5 -
99 Coffee Break - 65 49 +16 4.0 -
99 Winter Vacation - 55 55 ✓ Match 2.5 -
99 Livingstone - 40 44 -4 2.5 -
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