I played a match last week in our club singles league against a gentleman who was quite a few years my senior and at slightly less my skill level. It was just the way the draw worked out due to a lack of attendance for that night. I won the first set 6-1 playing less than 100% and trying to make it a competitive match. During the second set at 2-0, he starts to call balls that were clearly in, out. I thought it was just a few bad calls at first, but then it became almost a habit for him. I never questioned any of his calls and instead decided to just put the foot down on his throat and lay a beat down on him for the rest of the second set. It ended up 6-3. After the match on my way home, I wondered to myself if I had handled it the correct way. Well, I just got the draw sheet for this Monday's matches and I've drawn the same gentleman once again. Now, my first instinct is to lay out the body bag for him beside the court right from the get go, go hard on every point and teach him a lesson for last week, or just try to make it a competitive match and risk him doing it again. I'm curious to see if anyone else has been in a similar situation and what you did, or if you could offer any advice on what I should do. Thanks in advance.