no, it's not possible.
The only additional option available is to set the top spin and slice effects to their own button. To do so, you have to edit your Tennis.ini (or the .ini of your current profile), and change this line, under [Menu] :
CtrlExtraButton = 0
CtrlExtraButton = 1
and then go to the Controls menu.
== Mana Games ==
>> I don't answer Private Message, except if it's really a _Private_ topic <<