If you find that when looking at your 'Clubs' tab on your performance page that one of your clubs is missing then it is most likely because that club has only been used for shots within 50 yards of the pin. These are considered 'Short Game' shots and will be included under the 'Short Game' tab in the Performance pages and be excluded from 'Clubs' distance calculations.
Shots marked as 'Positional' are also excluded from your club distance calculations, for example a 8 iron chip shot out from the trees should be marked as a 'Positional' shot in editing. This would keep that shot from skewing your true average distances. Click here to find out more about Positional shots.