I confirm that I am a pad user. I have been using pads, and just them, since the beginning of my career in the tour. I have used always Playstation pads: in origin the PS1 and PS2 ones, with USB adaptor. Then I switched to PS3 pad, using it both with USB cable and Bluetooth connection mode.
Recently I've returned to PS2 one for several unplugging issues with the PS3 pad.
I think I managed to reach nice results in the tour using just a gamepad, so definitely: yes, it's possible to play a good tennis and to compete at good level in the tour with a gamepad, even if keyboard remains the most used tool

Record achieved by me for the most number of ripetitions of "pad/gamepad" term

sorry
