When we talk about Game Theory in Tennis and we specifically talk about the servers and receivers possible choices and their possible outcomes to try to win the point, for example where is the server going to play ( right, left, middle, with spin, slice to the returners body ) to the returners, or for example where is the returner going to hit the ball on the return ( left, right, middle, with kick, without kick, with slice, without slice, an the servers weakest side). What kind of game is that, is the game a sequential or simultaneous game?  Is it a game of trust, mass coordination, prisoners' dilemma, etc.?