Perhaps, should we listen to our own bodies, instead of a bunch of eyeglass wearing non athletic scientists who only compile and analyse information?
THINK... if you're gonna run full speed for 200 yards, should you warm up?
If you are gonna throw something as far as you can, first try, are you gonna warmup?
If you're gonna hit your hardest first serve, do you do so straight out of bed?
Forget the statistics and scientist, who don't play tennis. Think for yourself.
As for stretching...your are an athlete. TRY IT. It works for some, is avoided by other's. I learned this in 6th grade little league, around 1959.
When will YOU learn?