Professional golfers change clubs for a variety of reasons. Some try new clubs to improve their overall game, or to make a temporary change based on the course they’re playing. Others use a certain manufacturer’s clubs because they’re paid to endorse the equipment. Still others change with the times, replacing long irons with hybrids, for example. But there is no fixed pattern or time frame within which PGA Tour pros typically change clubs. The decision on which clubs to use is a personal choice for each pro.