Originally Posted by SystemicAnomaly
The graphic was originally from the Operation Doubles.
Coaches have been claiming for years/decades that the toss should be the same for all serves. This is simply not practical at all for a variety of serves for most servers. Even elite servers like Pete Sampras did not toss the ball to the same location for all serves. He claimed that he had 2 different tosses. Some servers may employ 3 different tosses. However, the difference between those different tosses is quite a bit less for many elite servers than for non-elite tennis players.
I'm advocating keeping the position of the toss the same while varying how far you throw it into the court. So, yes different toss positions, but because you're only varying how far you throw it into the court it's essentially impossible to read from where the returner is standing.