Ainge brushed off the notion that he has taken personal satisfaction from the Celtics’ resurgence. Most of all, he said, he is pleased that so many of the people he worked with and roots for are having success. “I still really enjoy the guys,” he said. “Obviously, I have relationships with most of the players. It’s been fun watching them grow and reach their potential. Everybody seems really fired up about the team, and that makes it fun.”