Players stand either side of the service line and face each other. One player acts as a mover, and the other as a shadower. The mover will move left and right across the service line, never backwards or forwards, and the shadower must keep up with their movements and follow them across the line.
Ensure the drill is done at a quick pace and doesn't become mundane. Players should not simply be going from one side of the court to the other, it should be a challenge for both players. Ensure quick movement, two steps left, three steps right, five steps left etc. Have player mixing it up. Change positions after 30 seconds.
Indoor courts give players less time and less room. Help them sharpen their split step, shorten their swing and stay calm, and winter becomes a season of real progress.
A tiebreak is a short sprint where every point is worth the same as a break of serve. The players who win them are rarely the ones who hit hardest. Here is how to coach the patterns, habits and scoreboard thinking that win the big points.
Most club players practise the serve on its own and then have no idea what to do with the ball that comes back. Serve plus one is the pattern that turns a good serve into a won point.