I play mixed double games with a group of 8 people regularly. When I team up with an old guy who doesn’t move well, I am just so discouraged and I don’t feel like playing. I always lost the matches when I teamed up with him because I was defeated before the match even started. I don’t mind losing the match if we at least try to get the ball. He is a not bad player at all but he is the weakest link among 4. I feel that I have to quit avoiding teaming up with this guy but I enjoy playing in the group. What should I do?