In ts4, especially in the sim tour, it seems impossible. Always serving from the middle lets the opp know the serve trajectory and even tough i use different directions every time, he can easily hit a fast powerful cross shot, similar to a reaching shot. I can't understand why this kind of shot is not considered a cheese tactic.
I think it's cheese because even if i read my opp's intentions, this shot is so effective that i can't do a lot to win the point easily, but i have to fight against the passing shots every time.
It's cheese also because you can hit it from a certain service return position and without any probability of fail (just need good timing).
What do you think about?