Back in the early days of USTA, they pretty loose about when and how the scores were put in.
We were tied with another team and they had to win all their matches in straight sets against another very good team to beat us. Amazingly, they did this. A couple months later I talked to one of the guys on the team they beat and though the team that beat us out of the playoffs did win the matches, 3 of them went three sets. Therefore, the other captain cheated and went to the playoffs instead of us.