ORLANDO, Fla. — Celtics coach Doc Rivers remembers when Boston overhauled its roster three years ago. Sure, the talent was there with the Big Three. So were the questions.

"When we made our move everybody told us you had to wait a year to put a championship team together," Rivers said before the Celtics practiced Friday in Orlando. "I didn't buy into that. Neither did our guys, and we proved everybody wrong."

Now imagine a major midseason shake-up.

The Celtics will face the reconstructed Magic today trying to duplicate the quick turnaround that propelled Boston to instant champions, giving this Eastern Conference finals rematch a Christmas Day remix.

Today's games

Bulls at Knicks, ESPN, 10 a.m.

Celtics at Magic, ABC, 12:30 p.m.

Heat at Lakers, ABC, 3 p.m.

Nuggets at Thunder, ESPN, 6 p.m.

Trail Blazers at Warriors, ESPN, 8:30 p.m.