When I was a kid playing in the park with my Dad, he always made me serve into the sun (refusing to change ends), he always taught me to deal with gamesmanship, (stopping me in the middle of a 2nd serve at 30-40 to waft an imaginary wasp as an example), or to remind me that I had not lost my serve in a while at a change of ends. He did this (unbeknownst to me at the time) as a method of teaching me to deal with the kind of thing that goes on in competitive sport Net result- I deal with that kind of thing now far better than most of my peers. I always serve into the sun. I never worry about gamesmanship and I let any comment drift over me without a care. There's a hell of a lot I'd like to improve in my game, but this? I've got sorted. Just wondering if anyone else actively works on this side of the game?