The serve is arguably the most important stroke in tennis - and the one in which players have the most control over. In today’s game, speed is a primary factor for players aiming to develop a potent service weapon. While I personally don’t believe speed is the only strategy of choice on the serve, it’s hard not to see value in gaining velocity on this stroke.
When looking at increasing serve speed, we should consider what it is that enables players to add considerable miles per hour. In other words, what qualities does serve speed (we’re talking first serve here), consist of? Is it strength? Flexibility? Balance?