16,000 years? Sheesh , this is really 'short sighted' to think that we'll still be either ...
A) Still living on Earth
B) Still quite similar human beings as we are now (un-augmented/cyberized)
C) Both of the above
D) Not yet succumbed to planetary disaster (We almost nuked ourselves into extinction , now we're headed to melting ourselves in a more 'natural' way via climate change)
E) Have not yet terraformed other planet/s & had failed to become an interplanetary species.
F) None of the above & tennis is the only thing in the universe that is part of a constant evolution (because tennis players are just so much more 'athletic' than they used to be & they hit the ball so much harder than they used to , it's just crazy!)