Official NHA Assessment

Race 10: NEXT VAAL RACEMEETING THURSDAY 2 FEBRUARY MR 66 HANDICAP (Open)

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Line Horse
Rosy Lemon
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
6 / 13
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    Global Breeze        2    56.5    1    0.00     0.0   71    66           71    +0
2    Oyster King          5    59.0    2    0.75     0.0   64    77           77    +13
3    Rosy Lemon           5    58.5    3    2.00     0.0   75    75           75    +0
4    Nuclear Force        5    59.0    4    2.50     0.0   76    75           75    -1
5    Pacific Express      2    59.5    5    3.75     0.0   77    74           74    -3
6    Monsieur Chevelle    3    59.0    6    4.75     6.0   68    59           59    -9
7    Manz Knight          6    56.0    7    5.50     0.0   59    65           65    +6
8    Royal Mazarin        4    60.5    8    6.50     3.0   67    68           68    +1
9    Gilda Gray           3    57.5    9    7.25     6.0   62    56           56    -6
10   Gregor Macgregor     4    60.0    10   8.25     3.0   66    67           67    +1
11   So Long Spring       7    56.0    11   9.25     0.0   58    65           65    +7
12   Mirren               4    60.5    12   99.99    3.0   67    68           68    +1
99   Bally Magic          6    60.5    99   0.00     0.0   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Global Breeze 71 75 71 +4 0.0 -
2 Oyster King 64 50 77 -27 0.0 -
3 Rosy Lemon Line 75 72 75 -3 0.0
4 Nuclear Force 76 61 75 -14 0.0 -
5 Pacific Express 77 59 74 -15 0.0 -
6 Monsieur Chevelle 68 63 59 +4 6.0 -
7 Manz Knight 59 60 65 -5 0.0 -
8 Royal Mazarin 67 70 68 +2 3.0 -
9 Gilda Gray 62 64 56 +8 6.0 -
10 Gregor Macgregor 66 63 67 -4 3.0 -
11 So Long Spring 58 51 65 -14 0.0 -
12 Mirren 67 67 68 -1 3.0 -
99 Bally Magic - 60 74 -14 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