Ray Allen has played in Boston as an opponent 15 times before. He knows what it's like to play under the fabled Celtics banners, knows exactly how the crowd treats visiting players.
His 16th appearance there as a visitor will be substantially different.
Not only will his trip there Sunday be his first as a former Celtic, but it will come with him donning the colors of perhaps the team's biggest rival these days, the reigning NBA champion Miami Heat, the club that has ousted Boston from the playoffs in each of the last two seasons.
And make no mistake, Allen has been getting ready for everything that will accompany this trip for quite a while.
''I've thought about it,'' Allen said. ''I think more about who, family-wise, is going, who can go and sorting the whole protocol out. I don't know what to expect from their side. But it's an interesting concept because I've always gotten a warm welcome, even before I started playing there. I ...