WALTHAM -- Boston Celtics head coach Brad Stevens declined to reveal who will start Game 1 against the Washington Wizards, leaving it a surprise whether he will stick with the small lineup that changed the course of the first round.

The Celtics will almost certainly stay with their usual four: Isaiah Thomas, Avery Bradley, Jae Crowder and Al Horford. Stevens' decision for the fifth spot will presumably come down to Amir Johnson, who started most of the regular season, or Gerald Green, who helped swing the first-round series while replacing Johnson over the final four games. It's possible, though unlikely, Stevens has something else planned for Washington; starting Green was a stunner, but the move helped shove the Celtics past the Chicago Bulls in Round 1.

"I don't know that I've ever been a part of a series that's flipped -- or anything that's flipped like that where a team has really played well against you and you just kind of find something that works and it works for four straight games pretty well," Stevens said Saturday afternoon. "So we were fortunate but I thought we created a sense of belief that, no matter the odds, we're going to tackle it."

But that series has been tackled. The Wizards will bring new challenges, like the elite backcourt of John Wall and Bradley Beal. Against the frontcourt of Otto Porter, Markieff Morris and Marcin Gortat, it's not clear yet who Stevens will tab as the fifth starter.

"I don't know if I anticipate lineup changes," the coach said Saturday afternoon, smiling slyly.

With a short turnaround before Game 1 tips off at 1 p.m. Sunday, Stevens said the Celtics staff has been working on getting everyone up to speed.

"We knew that there would probably be a quick turnaround or at least it was a higher likelihood of a quick turnaround than not," he said. "We have a staff full of people, some are working on the current opponent, some are working on the next. They've done a great job of bringing the rest of us up to speed ASAP. You play 82 games and they're all back-to-back or one day apart or whatever, you get used to preparing for the next one quickly."

"It's a lot of layers," added Stevens. "I watched two or three Washington-Atlanta games as well, so, I think you kind of, in any of your downtime that you're in this, you try to think about what possibly could happen so that you're as prepared as you can be. Washington's playing really well, they played great last night. We know they're a handful, they're a good team."