ON my first trip to sectionals I had a similar story. Unfortunately we also lost.
We won the toss and elected to defer. They chose to return. We chose to serve from the sunny side first meaning that they also would have to serve from the sunny side first.
They immediately asked to change their mind because they did not know we would elect to serve from the sunny side first. When we refused they got very upset, and thus started a very contentious match.
The match ended with back to back extremely tight line calls in the match tiebreaker. I just assume they waited until it mattered to get us back.
"You should be playing linebacker, not singles."