If you're serving, can you play a dropshot from the baseline - forcing your opponent to run to the net. They're at the net, and within a second of the point ending, you serve for the next point giving them no time to run back to the baseline to recieve the serve. Technically, your opponent should lose the point because they failed to play to tempo of the server, no?
Technically not correct.
1. The server needs to wait till the returner is ready
2. If the returner is not ready, he / she can raise the hand, and the server must wait
so, say you have a NK vs Nadal match.
let's assume everyone is mad at Nadal for long breaks between points, and there is a strong guidance to umpires to stop that.
NK takes 3 balls -> makes a perfect under-arm drop-shot serve, and Nadal tried to chase the ball & is at the net.
Let's say, for the sake of example, that NK immediately serves & the point stands.
some points later NK tries to repeat.
takes 3 balls -> under-arm perfect drop-shot, Nadal chases the ball and is at the net.
If I were Nadal in this case, once the "rally is over", I would immediately raise my hand, as I am not ready to return.
Go to the position in my own tempo, and when ready let the opponent serve.
Perfectly within the rules, nothing to discuss here.