I can ask you the same thing about defensive bots. Who are defensive bots on top 10 ? Those that haven't got good serves within them.how many tall serve bots are there in top 10 / top 20 / top 50?
and how many defense bots are in top 10 / top 20 / top 50?
It looks to me that there are much more defense bots popping out from Next Gen and youngsters.
This is not to say that currently the defense bots dominate tennis.