The same thing just happened to me the other day.
I was beating Mark 11-3 then he came back with crap from nowhere and smashed me.
Now even with using the tips from everyone here i cannot beat him in the first set since. As soon as i get ahead say 7-2 he starts doing crap like just hitting the net and bouncing over etc.
I hate you Mark.
Hey im looking for help in: Gow1, Saints row 1&2, Shadow run. Send me a friend request if you care to help.