Official NHA Assessment

Race 9: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 66 HANDICAP (Open)

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Line Horse
Calida
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
2 / 14
Within 2 points
Significant Diffs
4 / 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    Sail The Sky         4    60.5    1    0.00     0.5   67    63           67    +0
2    After Hours          7    61.5    2    0.30     0.0   69    71           71    +2
3    Libeccio             5    58.0    3    0.90     0.0   67    63           63    -4
4    Calida               2    61.5    4    1.30     0.0   69    69           69    +0
5    Flag Bearer          3    56.5    5    4.55     2.0   67    52           57    -10
6    Kotinos              3    60.5    6    5.15     2.0   67    60           60    -7
7    Callaburn            2    57.0    7    5.45     0.0   60    57           57    -3
8    Perini Palace        4    58.5    8    5.65     0.5   63    59           59    -4
9    Can't Catch Me       5    52.5    9    5.85     0.0   51    48           48    -3
10   Sahara Dawn          4    56.5    10   8.10     0.5   59    55           55    -4
11   Si Veloce            4    49.0    11   8.30     0.5   52    40           42    -10
12   Count Your Chances   5    58.0    12   11.55    0.0   62    59           59    -3
13   Stroke Of Mercy      5    56.0    13   11.85    0.0   58    55           55    -3
14   Written In Stone     9    60.5    14   16.35    0.0   67    64           64    -3
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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 67 62 67 -5 0.5 -
2 After Hours 69 79 71 +8 0.0 -
3 Libeccio 67 62 63 -1 0.0 -
4 Calida Line 69 72 69 +3 0.0
5 Flag Bearer 67 60 57 +3 2.0 -
6 Kotinos 67 59 60 -1 2.0 -
7 Callaburn 60 52 57 -5 0.0 -
8 Perini Palace 63 56 59 -3 0.5 -
9 Can't Catch Me 51 58 48 +10 0.0 -
10 Sahara Dawn 59 52 55 -3 0.5 -
11 Si Veloce 52 50 42 +8 0.5 -
12 Count Your Chances 62 51 59 -8 0.0 -
13 Stroke Of Mercy 58 52 55 -3 0.0 -
14 Written In Stone 67 67 64 +3 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