Tennis is one of the most challenging sports in the world, requiring a heady cocktail of technical skill, physical prowess, and mental strength. It can be an intimidating game for beginners to pick up, while experienced club players often struggle to improve. And 99.99 percent of tennis players never play professional-standard tennis, while also dreaming what it would be like to do so.In this multipurpose guide to the sport of tennis, a former highly ranked British junior provides ...