Games like golf and tennis are not taken seriously by gentlemen although they sometimes play them for the sake of the exercise. They do not have the same approach to these games as lesser mortals. In the case of golf, for instance, a gentleman is never seen with one of those vast leather bags filled with gleaming clubs, some of which are adorned with little wooly hats. Instead he has a thin canvas bag with half a dozen assorted clubs, some of which have wooden shafts which he calls his 'knockers.' With these he hits the ball great distances and has the knack of hacking the ball out of the most appalling rough onto the green. He is altogether a maddening person to play against.
The same applies to tennis, for which he dresses in long once-white trousers, now yellowed with age. In mixed foursomes he plays with great courtesy, serving underhand to the lady even if she is a Wimbledon player. Most of his best shots are played off the wood, which has a demoralising effect against even the most expert opponents. When he wins he is so sporting about it and goes on so about the luck of the game that most people feel like wringing his neck.
Douglas Sutherland, The English Gentleman (1978)